Scientific Method: Role and Importance Essay

The scientific method is a problem-solving strategy that is at the heart of biology and other sciences. There are five steps included in the scientific method that is making an observation, asking a question, forming a hypothesis or an explanation that could be tested, and predicting the test. After that, in the feedback step that is iterating, the results are used to make new predictions. The scientific method is almost always an iterative process. In other words, rather than a straight line, it is a cycle. The outcome of one round of questioning generates feedback that helps to enhance the next round of questioning.

Science is an activity that involves the logical explanation, prediction, and control of empirical phenomena. The concepts of reasoning applicable to the pursuit of this endeavor are referred to as scientific reasoning (Cowles, 2020). They include topics such as experimental design, hypothesis testing, and data interpretation. All sciences, including social sciences, follow the scientific method (Cowles, 2020). Different questions and tests are asked and performed by scientists in various domains. They do, however, have a common approach to finding logical and evidence-based answers.

Scientific reasoning is fundamental for all types of scientific study, not simply institutional research. Scientists do employ specific ideas that non-scientists do not have to use in everyday life. However, many reasoning principles are useful in everyday life. Even if one is not a scientist, they must use excellent reasoning to understand, anticipate, and regulate the events that occur in the environment. When one wants to start their careers, preserve their finances, or enhance their health, they need to acquire evidence to determine the most effective method for achieving our goals. Good scientific thinking skills come in handy in all of these situations.

Experiments, surveys, case studies, descriptive studies, and non-descriptive studies are all forms of research used in the scientific method. In an experiment, a researcher manipulates certain factors in a controlled environment and assesses their impact on other variables (Black, 2018). Descriptive research focuses on the nature of the relationship between the variables being studied rather than on cause and effect. A case study is a detailed examination of a single instance in which something unexpected has occurred. This is normally done with a single individual in extreme or exceptional instances. Large groups of individuals are polled to answer questions about certain topics in surveys. Correlational approaches are used in non-descriptive investigations to anticipate the link between two or more variables.

The Lau and Chan technique describes how to assess the validity of a theory or hypothesis using the scientific method, also known as the hypothetical-deductive method (Lau & Chan, 2017). For testing theories or hypotheses, the hypothetical-deductive technique (HD method) is highly useful. It is sometimes referred to as “scientific procedure.” This is not quite right because science can’t possibly employ only one approach. However, the HD technique is critical since it is one of the most fundamental approaches used in many scientific disciplines, including economics, physics, and biochemistry. Its implementation can be broken down into four stages. The stages include using the hypothetical-deductive method, identifying the testable hypothesis, generating the predictions according to the hypothesis, and using experiments in order to check the predictions (Cowles, 2020). If the predictions that are tested turn out to be correct, the hypothesis will be confirmed. Suppose the results are incorrect; the hypothesis would be disconfirmed.

The HD method instructs us on how to test a hypothesis, and each scientific theory must be testable.

One cannot discover evidence to illustrate whether a theory is likely or not if it cannot be tested. It cannot be considered scientific information in that circumstance. Consider the possibility that there are ghosts that people cannot see, cannot communicate with, and cannot be detected directly or indirectly. This hypothesis is defined in such a way that testing is not possible. It could still be real, and there could be such ghosts, but people would never know; thus, this cannot be considered a scientific hypothesis. In general, validating a theory’s predictions raises the likelihood that it is right. However, this does not establish definitively that the theory is right in and of itself. When given additional assumptions, a hypothesis frequently creates a prediction. When a forecast fails in this way, the theory may still be valid.

When a theory makes a faulty prediction, it might be difficult to determine whether the theory should be rejected or whether the auxiliary assumptions are flawed. Astronomers in the 19th century, for example, discovered that Newtonian physics could not adequately explain the orbit of the planet Mercury. This is due to the fact that Newtonian physics is incorrect, and you require relativity to get a more accurate orbit prediction. When astronomers discovered Uranus in 1781, they discovered that its orbit did not match Newtonian physics predictions. However, astronomers concluded that it could be explained if Uranus was being affected by another planet, and Neptune was discovered as a result.

I had several instances where I have made assumptions on an important issue regardless of evidence. Once I have prepared the work on the topic of power distribution in the workplace and its relation to gender, I have assumed that possibly because of the general feminine traits, women are less likely to create a strong image of power in comparison with men. In fact, such a hypothesis needs to be tested, and it is testable. For example, I could first define what is meant by feminine traits by collecting data from different biological and psychological sources. After that, I could observe the information regarding what factors or behavior patterns contribute to establishing power in the workplace. If I found the correlation between the feminine character traits, communication style, and behavioral patterns with the distribution of power in the workplace, then I could confirm my hypothesis.

Thus, applying the scientific method can help to improve critical reasoning by using tools from scientific reasoning. By supporting the provided hypothesis with evidence from scientific research and statistical data, one can make their claim more valuable and objective. The scientific method is essential for the creation of scientific theories that explain information and ideas in a scientifically rational manner. In a typical scientific method application, a researcher makes a hypothesis, tests it using various methods, and then alters it based on the results of the tests and experiments. The new hypothesis is then retested, further changed, and retested until it matches observable events and testing results. Hypotheses serve as tools for scientists to collect data in this way. Scientists can build broad general explanations, or scientific theories, based on that evidence and the numerous scientific experiments conducted to investigate possibilities. In conclusion, a scientific method is an important approach to examining the hypothesis. By using the tools of the scientific method, the inferences become rational and objective.

Black, M. (2018). Critical thinking: An introduction to logic and scientific method . Pickle Partners Publishing.

Cowles, H. M. (2020). The Scientific Method . Harvard University Press.

Lau, J., & Chan, J. (2017). Scientific methodology: Tutorials 1-9 .

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How to Write an Expository Essay

Published by Grace Graffin at August 17th, 2021 , Revised On July 26, 2023

Expository means “to describe or explain something” . It is related to the words ‘exposition’, ‘expound’, and ‘expose’ – to explain or reveal the meaning, to lay open, speak one’s mind.

Whenever there is a need to gather research and describe an idea, a  topic , or a process clearly and logically, it is done in the form of an expository  essay .

An expository essay requires the writer to take a balanced approach to the subject matter rather than justifying a particular point of view.

Expository essays are assigned to students to evaluate their subject knowledge and composition skills. When compared with  argumentative essays , they involve a lot less research.

Definition of Expository Essay

“The expository essay is the  type of essay  that involves an investigation of an idea or topic, appraises relevant supporting evidence material, and presents an argument in a clear and concise manner. ”

When to Write an Expository Essay

Your school or university could assign an expository essay to you as coursework or as part of an online exam.

However, the guidelines may or may not clearly state that your assignment is an expository essay. If that is the case, then look for keywords like ‘explain’, ‘describe’, ‘define’, etc., to be sure that what has been asked for is an expository essay.

You might even be asked to explain and emphasise a particular concept or term. Writing a simple definition will not be enough because you will be expected to explore the ideas in detail.

Writing an Expository Essay

An expository essay should not be based on your  personal  experiences and opinions. It rather takes an objective approach. You will be expected to explain the topic in a balanced way without any personal bias.

Make sure to avoid the first and second person (“I” and “You”) when writing an expository essay.

How to Structure an Expository Essay

The  structure  and format of your expository essay assignment will depend on your school’s guidelines and the topic you are investigating. However, it is always a good idea to develop an outline for your  essay  before starting to work.

The Five-Paragraph Essay Writing Approach

An expository essay will require you to take the five-paragraph essay approach: an  introductory paragraph , a main body paragraph , and a concluding paragraph . This is often referred to as the hamburger style of the essay because, like a hamburger, it contains five main parts: the introduction and conclusion being the bun that encapsulates everything.

Rationale and Thesis Statement

Start your essay  with a rationale and thesis, also known as the  thesis statement , so your readers know what you set out to achieve in your expository essay assignment. Ensure the thesis statement is narrow enough to follow the guidelines in the assignment brief. If the thesis statement is weak and too broad, you will struggle to produce a flawless expository essay.

The Framework

Construct a framework, so you know what elements will constitute the basis of your essay.

Expository Essay Introduction

Like other  essay types , an expository essay begins with an  introduction , including a hook, background to the topic, and a thesis statement. Once you have grabbed the readers’ interest, it will be easier to get them to read the remaining essay.

Frequently Asked Questions

Will i need the skill of expository writing after i finish my studies.

It depends on what you are studying for. While you might or might not write any more expository essays after your formal education has ended, the skill will be very useful in certain careers, such as business reports, journalism, and in scientific and technical writing.

How does an expository essay differ from an argumentative essay?

An argumentative essay is usually longer and requires more research. It starts with a claim about something that will need supporting evidence. And both sides of the argument need to be discussed. In an expository essay, there is no requirement to make an original argument and defend/support it.

What is the purpose of expository essays?

This style of essay is necessary when you have to showcase your knowledge on a given subject, or your ability to gather research on one and present your findings.

How long is an expository essay?

There is no fixed length but an expository essay could be part of an exam, in which case it might only be 1,000 words or less. They are usually shorter than argumentative essays . It can depend on the subject under discussion. You will likely be given instructions on the required word count.

Are there different types of expository essay?

There are six different types of expository essay, each with a different purpose.

The six types are:

Process essay – describing a task, a method, how to complete something Cause and effect essay – why something happened and its effects Problem-solution essay – provide analysis of problems and their solutions Compare and contrast essay – describe the similarities and differences between two subjects Definition essay – define the topic in detail and explain the how, what, and why Classification essay – separate the topic’s categories and define them in detail

When you are assigned your essay, you should be able to distinguish which of these approaches you are required to take.

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What is an expository essay?

The expository essay is a genre of essay that requires the student to investigate an idea, evaluate evidence, expound on the idea, and set forth an argument concerning that idea in a clear and concise manner. This can be accomplished through comparison and contrast, definition, example, the analysis of cause and effect, etc.

Please note : This genre is commonly assigned as a tool for classroom evaluation and is often found in various exam formats.

The structure of the expository essay is held together by the following.

  • A clear, concise, and defined thesis statement that occurs in the first paragraph of the essay.

It is essential that this thesis statement be appropriately narrowed to follow the guidelines set forth in the assignment. If the student does not master this portion of the essay, it will be quite difficult to compose an effective or persuasive essay.

  • Clear and logical transitions between the introduction, body, and conclusion.

Transitions are the mortar that holds the foundation of the essay together. Without logical progression of thought, the reader is unable to follow the essay’s argument, and the structure will collapse.

  • Body paragraphs that include evidential support.

Each paragraph should be limited to the exposition of one general idea. This will allow for clarity and direction throughout the essay. What is more, such conciseness creates an ease of readability for one’s audience. It is important to note that each paragraph in the body of the essay must have some logical connection to the thesis statement in the opening paragraph.

  • Evidential support (whether factual, logical, statistical, or anecdotal).

Often times, students are required to write expository essays with little or no preparation; therefore, such essays do not typically allow for a great deal of statistical or factual evidence.

  • A bit of creativity!

Though creativity and artfulness are not always associated with essay writing, it is an art form nonetheless. Try not to get stuck on the formulaic nature of expository writing at the expense of writing something interesting. Remember, though you may not be crafting the next great novel, you are attempting to leave a lasting impression on the people evaluating your essay.

  • A conclusion that does not simply restate the thesis, but readdresses it in light of the evidence provided.

It is at this point of the essay that students will inevitably begin to struggle. This is the portion of the essay that will leave the most immediate impression on the mind of the reader. Therefore, it must be effective and logical. Do not introduce any new information into the conclusion; rather, synthesize and come to a conclusion concerning the information presented in the body of the essay.

A complete argument

Perhaps it is helpful to think of an essay in terms of a conversation or debate with a classmate. If I were to discuss the cause of the Great Depression and its current effect on those who lived through the tumultuous time, there would be a beginning, middle, and end to the conversation. In fact, if I were to end the exposition in the middle of my second point, questions would arise concerning the current effects on those who lived through the Depression. Therefore, the expository essay must be complete, and logically so, leaving no doubt as to its intent or argument.

The five-paragraph Essay

A common method for writing an expository essay is the five-paragraph approach. This is, however, by no means the only formula for writing such essays. If it sounds straightforward, that is because it is; in fact, the method consists of:

  • an introductory paragraph
  • three evidentiary body paragraphs
  • a conclusion

What is the Scientific Method: How does it work and why is it important?

The scientific method is a systematic process involving steps like defining questions, forming hypotheses, conducting experiments, and analyzing data. It minimizes biases and enables replicable research, leading to groundbreaking discoveries like Einstein's theory of relativity, penicillin, and the structure of DNA. This ongoing approach promotes reason, evidence, and the pursuit of truth in science.

Updated on November 18, 2023

What is the Scientific Method: How does it work and why is it important?

Beginning in elementary school, we are exposed to the scientific method and taught how to put it into practice. As a tool for learning, it prepares children to think logically and use reasoning when seeking answers to questions.

Rather than jumping to conclusions, the scientific method gives us a recipe for exploring the world through observation and trial and error. We use it regularly, sometimes knowingly in academics or research, and sometimes subconsciously in our daily lives.

In this article we will refresh our memories on the particulars of the scientific method, discussing where it comes from, which elements comprise it, and how it is put into practice. Then, we will consider the importance of the scientific method, who uses it and under what circumstances.

What is the scientific method?

The scientific method is a dynamic process that involves objectively investigating questions through observation and experimentation . Applicable to all scientific disciplines, this systematic approach to answering questions is more accurately described as a flexible set of principles than as a fixed series of steps.

The following representations of the scientific method illustrate how it can be both condensed into broad categories and also expanded to reveal more and more details of the process. These graphics capture the adaptability that makes this concept universally valuable as it is relevant and accessible not only across age groups and educational levels but also within various contexts.

a graph of the scientific method

Steps in the scientific method

While the scientific method is versatile in form and function, it encompasses a collection of principles that create a logical progression to the process of problem solving:

  • Define a question : Constructing a clear and precise problem statement that identifies the main question or goal of the investigation is the first step. The wording must lend itself to experimentation by posing a question that is both testable and measurable.
  • Gather information and resources : Researching the topic in question to find out what is already known and what types of related questions others are asking is the next step in this process. This background information is vital to gaining a full understanding of the subject and in determining the best design for experiments. 
  • Form a hypothesis : Composing a concise statement that identifies specific variables and potential results, which can then be tested, is a crucial step that must be completed before any experimentation. An imperfection in the composition of a hypothesis can result in weaknesses to the entire design of an experiment.
  • Perform the experiments : Testing the hypothesis by performing replicable experiments and collecting resultant data is another fundamental step of the scientific method. By controlling some elements of an experiment while purposely manipulating others, cause and effect relationships are established.
  • Analyze the data : Interpreting the experimental process and results by recognizing trends in the data is a necessary step for comprehending its meaning and supporting the conclusions. Drawing inferences through this systematic process lends substantive evidence for either supporting or rejecting the hypothesis.
  • Report the results : Sharing the outcomes of an experiment, through an essay, presentation, graphic, or journal article, is often regarded as a final step in this process. Detailing the project's design, methods, and results not only promotes transparency and replicability but also adds to the body of knowledge for future research.
  • Retest the hypothesis : Repeating experiments to see if a hypothesis holds up in all cases is a step that is manifested through varying scenarios. Sometimes a researcher immediately checks their own work or replicates it at a future time, or another researcher will repeat the experiments to further test the hypothesis.

a chart of the scientific method

Where did the scientific method come from?

Oftentimes, ancient peoples attempted to answer questions about the unknown by:

  • Making simple observations
  • Discussing the possibilities with others deemed worthy of a debate
  • Drawing conclusions based on dominant opinions and preexisting beliefs

For example, take Greek and Roman mythology. Myths were used to explain everything from the seasons and stars to the sun and death itself.

However, as societies began to grow through advancements in agriculture and language, ancient civilizations like Egypt and Babylonia shifted to a more rational analysis for understanding the natural world. They increasingly employed empirical methods of observation and experimentation that would one day evolve into the scientific method . 

In the 4th century, Aristotle, considered the Father of Science by many, suggested these elements , which closely resemble the contemporary scientific method, as part of his approach for conducting science:

  • Study what others have written about the subject.
  • Look for the general consensus about the subject.
  • Perform a systematic study of everything even partially related to the topic.

a pyramid of the scientific method

By continuing to emphasize systematic observation and controlled experiments, scholars such as Al-Kindi and Ibn al-Haytham helped expand this concept throughout the Islamic Golden Age . 

In his 1620 treatise, Novum Organum , Sir Francis Bacon codified the scientific method, arguing not only that hypotheses must be tested through experiments but also that the results must be replicated to establish a truth. Coming at the height of the Scientific Revolution, this text made the scientific method accessible to European thinkers like Galileo and Isaac Newton who then put the method into practice.

As science modernized in the 19th century, the scientific method became more formalized, leading to significant breakthroughs in fields such as evolution and germ theory. Today, it continues to evolve, underpinning scientific progress in diverse areas like quantum mechanics, genetics, and artificial intelligence.

Why is the scientific method important?

The history of the scientific method illustrates how the concept developed out of a need to find objective answers to scientific questions by overcoming biases based on fear, religion, power, and cultural norms. This still holds true today.

By implementing this standardized approach to conducting experiments, the impacts of researchers’ personal opinions and preconceived notions are minimized. The organized manner of the scientific method prevents these and other mistakes while promoting the replicability and transparency necessary for solid scientific research.

The importance of the scientific method is best observed through its successes, for example: 

  • “ Albert Einstein stands out among modern physicists as the scientist who not only formulated a theory of revolutionary significance but also had the genius to reflect in a conscious and technical way on the scientific method he was using.” Devising a hypothesis based on the prevailing understanding of Newtonian physics eventually led Einstein to devise the theory of general relativity .
  • Howard Florey “Perhaps the most useful lesson which has come out of the work on penicillin has been the demonstration that success in this field depends on the development and coordinated use of technical methods.” After discovering a mold that prevented the growth of Staphylococcus bacteria, Dr. Alexander Flemimg designed experiments to identify and reproduce it in the lab, thus leading to the development of penicillin .
  • James D. Watson “Every time you understand something, religion becomes less likely. Only with the discovery of the double helix and the ensuing genetic revolution have we had grounds for thinking that the powers held traditionally to be the exclusive property of the gods might one day be ours. . . .” By using wire models to conceive a structure for DNA, Watson and Crick crafted a hypothesis for testing combinations of amino acids, X-ray diffraction images, and the current research in atomic physics, resulting in the discovery of DNA’s double helix structure .

Final thoughts

As the cases exemplify, the scientific method is never truly completed, but rather started and restarted. It gave these researchers a structured process that was easily replicated, modified, and built upon. 

While the scientific method may “end” in one context, it never literally ends. When a hypothesis, design, methods, and experiments are revisited, the scientific method simply picks up where it left off. Each time a researcher builds upon previous knowledge, the scientific method is restored with the pieces of past efforts.

By guiding researchers towards objective results based on transparency and reproducibility, the scientific method acts as a defense against bias, superstition, and preconceived notions. As we embrace the scientific method's enduring principles, we ensure that our quest for knowledge remains firmly rooted in reason, evidence, and the pursuit of truth.

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  • Writing Tips

How to Write an Expository Essay

4-minute read

  • 29th March 2020

An expository essay explains something. This means investigating an idea, looking at evidence, coming to a conclusion, and explaining your thinking. But how do you write a strong expository essay? Our top tips include:

  • Read the essay prompt carefully and using it to guide your research.
  • Come up with a thesis statement (i.e., a position that you’ll explain).
  • Plan the structure of your essay before you start writing.
  • Once you have a first draft, revise and proofread to make sure it is perfect.

For more advice on how this works, check out the guide below.

1. Read Your Essay Prompt

Most expository essay prompts will ask you to do one of the following:

  • Define and explain a concept or theory.
  • Compare and contrast two ideas.
  • Examine a problem and propose a solution.
  • Describe a cause and effect relationship.
  • Explain a step-by-step process.
  • Analyze a broad subject and classify examples into groups.

When you’ve been set an expository assignment, then, check the prompt or question carefully. You can use the phrasing to guide your research. You may also need to select a topic to write about. If so, try to think of something:

  • You already know at least something about.
  • You find interesting enough to research.
  • That fits with the instructions in the essay prompt (e.g., if you’ve been asked to contrast two things, you’ll need a topic that allows for a comparison).
  • That is narrow enough to discuss in one essay.

Start by brainstorming topics, then narrow it down to one or two ideas.

2. Come Up with a Thesis Statement

Once you have a topic, you’ll need to do some research and develop a thesis statement. This is the proposition or position that you’ll explain in your essay.

Your thesis statement should be something you can back up with evidence and facts, as well as something that answers the question in your essay prompt. Keep in mind, too, that an expository essay should present a balanced account of the facts available, not personal opinions. For instance, we’ve come up with thesis statements for a few example essay prompts:

When you’ve selected a thesis, make sure you’ve got evidence to back it up! This may mean doing a little more research before you start writing.

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3. Structuring an Expository Essay

The exact length and content of your essay will depend on the topic and prompt. However, most expository essays follow a similar basic structure:

  • Introduction – A paragraph where you introduce the essay topic and your thesis statement (i.e., the issue or idea you will explain in the essay).
  • Main Body – A series of short paragraphs in which you explain your thesis statement, providing evidence and arguments to support each point.
  • Conclusion – A final paragraph where you restate your thesis and how your evidence supports this. Try not to introduce any new information here (if it’s important, it should go in the main body).
  • References – If required, include a bibliography of sources you’ve used.

Before you start writing, then, create an essay outline with the structure above in mind and plan what each paragraph will say.

4. Editing and Proofreading

When you have a first draft, take a break and re-read it. Now comes the redrafting ! This is where you go back over your essay and look for areas to improve. Do you provide enough evidence? Is your argument clear? Even a few tweaks may increase your mark, so make sure to redraft at least once!

Finally, make sure to have your essay proofread before you submit it for marking. This will ensure your writing is error free and easy to read, giving you an even better chance of getting the grades you deserve.

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Expository Writing: Definition and Examples

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Hannah Yang

expository writing

Table of Contents

What is expository writing, what is an expository paragraph, expository writing examples, how prowritingaid can help you with expository composition.

One of the most common types of writing is expository writing. Whether you’re a student taking an English class or a professional trying to communicate to others in your field, you’ll need to use expository writing in your day-to-day work.

So, what exactly does this term mean?

The short answer is that expository writing refers to any writing designed primarily to explain or instruct.

Read on to learn the definition of expository writing as well as some examples of what this type of writing can look like.

Before we look at examples of expository writing, let’s start with a quick definition of what this term actually means.

Expository Writing Definition

The term expository writing refers to any writing that’s designed to explain something. We use the word expository to describe any passage of writing that’s supposed to present information and help you understand it in an objective way.

Some common examples of expository writing include academic essays, textbooks, instructional guides, and news reports. Good expository writing should be factual, objective, and clear.

expository writing definition

To better understand what this term means, think about the difference between a scientific article, a short story, and an advertisement.

The scientific article is considered expository writing because its primary purpose is to explain a particular topic in more detail. It presents data, analyzes what that data means, and focuses on the facts.  

On the other hand, the short story isn’t considered expository writing, because its core purpose isn’t to explain or inform—instead, it’s probably trying to entertain you or to take you on a journey. Short stories are narrative writing.

Similarly, an advertisement isn’t expository writing because its core purpose isn’t to explain or inform—instead, it’s trying to persuade you to buy what it’s selling. Advertisements are persuasive writing.   

Here’s a quick rundown of what expository essays should and shouldn’t do.

An expository essay should:

Teach the reader about a particular topic

Focus on the facts

Follow a clearly organized structure

Present information and details from credible sources

An expository essay should not:

Try to change the reader’s mind about something

Present the author’s personal opinions

Include made-up narratives or stories

Follow experimental or nonlinear structures

3 types of writing

An expository paragraph is exactly what it sounds like—a paragraph of expository writing.

A well-written expository paragraph should follow a specific format to make it as clear and easy to read as possible. Most expository paragraphs do the following things:

Start with a topic sentence, which explains what the paragraph will be about

Then, include 3 – 5 body sentences that provide supporting details for the topic sentence

Finally, wrap things up with a closing sentence that summarizes what the paragraph has said

Writing an expository paragraph is a great way to practice expository writing. That’s because the paragraph follows the same structure as a more complex expository essay, just on a smaller scale.

Most expository essays should follow this format:  

Start with an introductory paragraph that includes the thesis statement, which tells the reader the core statement of the essay

Then, include 3 – 5 body paragraphs that provide factual evidence to support the thesis statement

Finally, wrap things up with a concluding paragraph that summarizes what the body paragraphs and thesis statement said

You can see the similarities between the two formats. If you can write a fantastic expository paragraph, you’ll be well-prepared to move on to writing a full expository essay.

Example of Expository Paragraph

Here’s an example of an expository paragraph that follows the structure described above.

The leading cause of death in the United States is heart disease, which can be fatal if it leads to heart attack or cardiac arrest. Heart attacks occur when a blockage in the coronary artery prevents oxygenated blood from reaching the heart. Cardiac arrests occur when the heart stops pumping entirely, which prevents the patient from breathing normally. Both of these problems can be deadly, even in seemingly healthy people who don’t have noticeable risk factors. As a result, heart disease is an important problem that many doctors and scientists are researching.

expository essay on scientific method

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There are many ways you can present information in an expository essay. Here are four of the most popular ways, along with examples of each one.  

Problem and Solution Essay

A problem and solution essay presents the reader with a problem and then considers possible solutions to that problem. 

Here’s an example passage you might find in a problem and solution essay:

Among the many proposed solutions to rising carbon emissions, one promising possibility is carbon trapping. Scientists are figuring out how to pull carbon emissions out of the atmosphere and trap it in less harmful forms, such as by injecting carbon dioxide underground so it will turn to stone.

Compare and Contrast Essay

This type of essay takes two subjects and compares and contrasts them. It focuses on highlighting the differences and similarities between those two things.

Here’s an example passage of this type of expository writing:

Though country music and R&B music have very different sounds, they also share many similarities. For one thing, both types of music embody a specific cultural identity. For another, both genres trace their roots back to the 1920s, when the Victor Talking Machine Company signed singers from the American South.

Classification Essay

In a classification essay, you describe the categories within a certain group of things.  

Here’s an example passage you might find in a classification essay:

There are three ways in which artificial intelligence might become stronger than humans in the future: high speed, high collective intelligence, and high quality. A speed AI would be able to perform calculations and experience the world much faster than humans. A collective intelligence, like a hive mind, would be able to break down a complex task into several parts and pursue them simultaneously. Finally, a quality AI would simply be able to solve more complex problems than humans could.

Process Essay

In a process essay, you give the reader the steps for completing a specific process. This is similar to a how-to guide or an instruction manual.   

Here’s an example passage you might find in this type of expository writing:

Caramelize the chopped onions in a frying pan. When the onions have caramelized, mix in the bell peppers, mushrooms, and tomatoes and stir for 4 – 6 minutes or until all the ingredients have softened. If you want to add meat, you can add ground beef and cook for another 4 – 6 minutes. Season with salt and pepper to taste.  

Good expository writing should be easy to read. After all, the purpose of exposition is to explain things to your readers, and you won’t be able to accomplish that if they have trouble understanding your writing.

That’s why ProWritingAid can help you write an expository essay. The grammar checker can help you ensure your sentences flow well, you’re not missing any necessary punctuation, and all your words are precise and clear.

Good luck, and happy writing!

Hannah is a speculative fiction writer who loves all things strange and surreal. She holds a BA from Yale University and lives in Colorado. When she’s not busy writing, you can find her painting watercolors, playing her ukulele, or hiking in the Rockies. Follow her work on hannahyang.com or on Twitter at @hannahxyang.

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Successful Scientific Writing and Publishing: A Step-by-Step Approach

John k. iskander.

1 Centers for Disease Control and Prevention, Atlanta, Georgia

Sara Beth Wolicki

2 Association of Schools and Programs of Public Health, Washington, District of Columbia

Rebecca T. Leeb

Paul z. siegel.

Scientific writing and publication are essential to advancing knowledge and practice in public health, but prospective authors face substantial challenges. Authors can overcome barriers, such as lack of understanding about scientific writing and the publishing process, with training and resources. The objective of this article is to provide guidance and practical recommendations to help both inexperienced and experienced authors working in public health settings to more efficiently publish the results of their work in the peer-reviewed literature. We include an overview of basic scientific writing principles, a detailed description of the sections of an original research article, and practical recommendations for selecting a journal and responding to peer review comments. The overall approach and strategies presented are intended to contribute to individual career development while also increasing the external validity of published literature and promoting quality public health science.

Introduction

Publishing in the peer-reviewed literature is essential to advancing science and its translation to practice in public health ( 1 , 2 ). The public health workforce is diverse and practices in a variety of settings ( 3 ). For some public health professionals, writing and publishing the results of their work is a requirement. Others, such as program managers, policy makers, or health educators, may see publishing as being outside the scope of their responsibilities ( 4 ).

Disseminating new knowledge via writing and publishing is vital both to authors and to the field of public health ( 5 ). On an individual level, publishing is associated with professional development and career advancement ( 6 ). Publications share new research, results, and methods in a trusted format and advance scientific knowledge and practice ( 1 , 7 ). As more public health professionals are empowered to publish, the science and practice of public health will advance ( 1 ).

Unfortunately, prospective authors face barriers to publishing their work, including navigating the process of scientific writing and publishing, which can be time-consuming and cumbersome. Often, public health professionals lack both training opportunities and understanding of the process ( 8 ). To address these barriers and encourage public health professionals to publish their findings, the senior author (P.Z.S.) and others developed Successful Scientific Writing (SSW), a course about scientific writing and publishing. Over the past 30 years, this course has been taught to thousands of public health professionals, as well as hundreds of students at multiple graduate schools of public health. An unpublished longitudinal survey of course participants indicated that two-thirds agreed that SSW had helped them to publish a scientific manuscript or have a conference abstract accepted. The course content has been translated into this manuscript. The objective of this article is to provide prospective authors with the tools needed to write original research articles of high quality that have a good chance of being published.

Basic Recommendations for Scientific Writing

Prospective authors need to know and tailor their writing to the audience. When writing for scientific journals, 4 fundamental recommendations are: clearly stating the usefulness of the study, formulating a key message, limiting unnecessary words, and using strategic sentence structure.

To demonstrate usefulness, focus on how the study addresses a meaningful gap in current knowledge or understanding. What critical piece of information does the study provide that will help solve an important public health problem? For example, if a particular group of people is at higher risk for a specific condition, but the magnitude of that risk is unknown, a study to quantify the risk could be important for measuring the population’s burden of disease.

Scientific articles should have a clear and concise take-home message. Typically, this is expressed in 1 to 2 sentences that summarize the main point of the paper. This message can be used to focus the presentation of background information, results, and discussion of findings. As an early step in the drafting of an article, we recommend writing out the take-home message and sharing it with co-authors for their review and comment. Authors who know their key point are better able to keep their writing within the scope of the article and present information more succinctly. Once an initial draft of the manuscript is complete, the take-home message can be used to review the content and remove needless words, sentences, or paragraphs.

Concise writing improves the clarity of an article. Including additional words or clauses can divert from the main message and confuse the reader. Additionally, journal articles are typically limited by word count. The most important words and phrases to eliminate are those that do not add meaning, or are duplicative. Often, cutting adjectives or parenthetical statements results in a more concise paper that is also easier to read.

Sentence structure strongly influences the readability and comprehension of journal articles. Twenty to 25 words is a reasonable range for maximum sentence length. Limit the number of clauses per sentence, and place the most important or relevant clause at the end of the sentence ( 9 ). Consider the sentences:

  • By using these tips and tricks, an author may write and publish an additional 2 articles a year.
  • An author may write and publish an additional 2 articles a year by using these tips and tricks.

The focus of the first sentence is on the impact of using the tips and tricks, that is, 2 more articles published per year. In contrast, the second sentence focuses on the tips and tricks themselves.

Authors should use the active voice whenever possible. Consider the following example:

  • Active voice: Authors who use the active voice write more clearly.
  • Passive voice: Clarity of writing is promoted by the use of the active voice.

The active voice specifies who is doing the action described in the sentence. Using the active voice improves clarity and understanding, and generally uses fewer words. Scientific writing includes both active and passive voice, but authors should be intentional with their use of either one.

Sections of an Original Research Article

Original research articles make up most of the peer-reviewed literature ( 10 ), follow a standardized format, and are the focus of this article. The 4 main sections are the introduction, methods, results, and discussion, sometimes referred to by the initialism, IMRAD. These 4 sections are referred to as the body of an article. Two additional components of all peer-reviewed articles are the title and the abstract. Each section’s purpose and key components, along with specific recommendations for writing each section, are listed below.

Title. The purpose of a title is twofold: to provide an accurate and informative summary and to attract the target audience. Both prospective readers and database search engines use the title to screen articles for relevance ( 2 ). All titles should clearly state the topic being studied. The topic includes the who, what, when, and where of the study. Along with the topic, select 1 or 2 of the following items to include within the title: methods, results, conclusions, or named data set or study. The items chosen should emphasize what is new and useful about the study. Some sources recommend limiting the title to less than 150 characters ( 2 ). Articles with shorter titles are more frequently cited than articles with longer titles ( 11 ). Several title options are possible for the same study ( Figure ).

An external file that holds a picture, illustration, etc.
Object name is PCD-15-E79s01.jpg

Two examples of title options for a single study.

Abstract . The abstract serves 2 key functions. Journals may screen articles for potential publication by using the abstract alone ( 12 ), and readers may use the abstract to decide whether to read further. Therefore, it is critical to produce an accurate and clear abstract that highlights the major purpose of the study, basic procedures, main findings, and principal conclusions ( 12 ). Most abstracts have a word limit and can be either structured following IMRAD, or unstructured. The abstract needs to stand alone from the article and tell the most important parts of the scientific story up front.

Introduction . The purpose of the introduction is to explain how the study sought to create knowledge that is new and useful. The introduction section may often require only 3 paragraphs. First, describe the scope, nature, or magnitude of the problem being addressed. Next, clearly articulate why better understanding this problem is useful, including what is currently known and the limitations of relevant previous studies. Finally, explain what the present study adds to the knowledge base. Explicitly state whether data were collected in a unique way or obtained from a previously unstudied data set or population. Presenting both the usefulness and novelty of the approach taken will prepare the reader for the remaining sections of the article.

Methods . The methods section provides the information necessary to allow others, given the same data, to recreate the analysis. It describes exactly how data relevant to the study purpose were collected, organized, and analyzed. The methods section describes the process of conducting the study — from how the sample was selected to which statistical methods were used to analyze the data. Authors should clearly name, define, and describe each study variable. Some journals allow detailed methods to be included in an appendix or supplementary document. If the analysis involves a commonly used public health data set, such as the Behavioral Risk Factor Surveillance System ( 13 ), general aspects of the data set can be provided to readers by using references. Because what was done is typically more important than who did it, use of the passive voice is often appropriate when describing methods. For example, “The study was a group randomized, controlled trial. A coin was tossed to select an intervention group and a control group.”

Results . The results section describes the main outcomes of the study or analysis but does not interpret the findings or place them in the context of previous research. It is important that the results be logically organized. Suggested organization strategies include presenting results pertaining to the entire population first, and then subgroup analyses, or presenting results according to increasing complexity of analysis, starting with demographic results before proceeding to univariate and multivariate analyses. Authors wishing to draw special attention to novel or unexpected results can present them first.

One strategy for writing the results section is to start by first drafting the figures and tables. Figures, which typically show trends or relationships, and tables, which show specific data points, should each support a main outcome of the study. Identify the figures and tables that best describe the findings and relate to the study’s purpose, and then develop 1 to 2 sentences summarizing each one. Data not relevant to the study purpose may be excluded, summarized briefly in the text, or included in supplemental data sets. When finalizing figures, ensure that axes are labeled and that readers can understand figures without having to refer to accompanying text.

Discussion . In the discussion section, authors interpret the results of their study within the context of both the related literature and the specific scientific gap the study was intended to fill. The discussion does not introduce results that were not presented in the results section. One way authors can focus their discussion is to limit this section to 4 paragraphs: start by reinforcing the study’s take-home message(s), contextualize key results within the relevant literature, state the study limitations, and lastly, make recommendations for further research or policy and practice changes. Authors can support assertions made in the discussion with either their own findings or by referencing related research. By interpreting their own study results and comparing them to others in the literature, authors can emphasize findings that are unique, useful, and relevant. Present study limitations clearly and without apology. Finally, state the implications of the study and provide recommendations or next steps, for example, further research into remaining gaps or changes to practice or policy. Statements or recommendations regarding policy may use the passive voice, especially in instances where the action to be taken is more important than who will implement the action.

Beginning the Writing Process

The process of writing a scientific article occurs before, during, and after conducting the study or analyses. Conducting a literature review is crucial to confirm the existence of the evidence gap that the planned analysis seeks to fill. Because literature searches are often part of applying for research funding or developing a study protocol, the citations used in the grant application or study proposal can also be used in subsequent manuscripts. Full-text databases such as PubMed Central ( 14 ), NIH RePORT ( 15 ), and CDC Stacks ( 16 ) can be useful when performing literature reviews. Authors should familiarize themselves with databases that are accessible through their institution and any assistance that may be available from reference librarians or interlibrary loan systems. Using citation management software is one way to establish and maintain a working reference list. Authors should clearly understand the distinction between primary and secondary references, and ensure that they are knowledgeable about the content of any primary or secondary reference that they cite.

Review of the literature may continue while organizing the material and writing begins. One way to organize material is to create an outline for the paper. Another way is to begin drafting small sections of the article such as the introduction. Starting a preliminary draft forces authors to establish the scope of their analysis and clearly articulate what is new and novel about the study. Furthermore, using information from the study protocol or proposal allows authors to draft the methods and part of the results sections while the study is in progress. Planning potential data comparisons or drafting “table shells” will help to ensure that the study team has collected all the necessary data. Drafting these preliminary sections early during the writing process and seeking feedback from co-authors and colleagues may help authors avoid potential pitfalls, including misunderstandings about study objectives.

The next step is to conduct the study or analyses and use the resulting data to fill in the draft table shells. The initial results will most likely require secondary analyses, that is, exploring the data in ways in addition to those originally planned. Authors should ensure that they regularly update their methods section to describe all changes to data analysis.

After completing table shells, authors should summarize the key finding of each table or figure in a sentence or two. Presenting preliminary results at meetings, conferences, and internal seminars is an established way to solicit feedback. Authors should pay close attention to questions asked by the audience, treating them as an informal opportunity for peer review. On the basis of the questions and feedback received, authors can incorporate revisions and improvements into subsequent drafts of the manuscript.

The relevant literature should be revisited periodically while writing to ensure knowledge of the most recent publications about the manuscript topic. Authors should focus on content and key message during the process of writing the first draft and should not spend too much time on issues of grammar or style. Drafts, or portions of drafts, should be shared frequently with trusted colleagues. Their recommendations should be reviewed and incorporated when they will improve the manuscript’s overall clarity.

For most authors, revising drafts of the manuscript will be the most time-consuming task involved in writing a paper. By regularly checking in with coauthors and colleagues, authors can adopt a systematic approach to rewriting. When the author has completed a draft of the manuscript, he or she should revisit the key take-home message to ensure that it still matches the final data and analysis. At this point, final comments and approval of the manuscript by coauthors can be sought.

Authors should then seek to identify journals most likely to be interested in considering the study for publication. Initial questions to consider when selecting a journal include:

  • Which audience is most interested in the paper’s message?
  • Would clinicians, public health practitioners, policy makers, scientists, or a broader audience find this useful in their field or practice?
  • Do colleagues have prior experience submitting a manuscript to this journal?
  • Is the journal indexed and peer-reviewed?
  • Is the journal subscription or open-access and are there any processing fees?
  • How competitive is the journal?

Authors should seek to balance the desire to be published in a top-tier journal (eg, Journal of the American Medical Association, BMJ, or Lancet) against the statistical likelihood of rejection. Submitting the paper initially to a journal more focused on the paper’s target audience may result in a greater chance of acceptance, as well as more timely dissemination of findings that can be translated into practice. Most of the 50 to 75 manuscripts published each week by authors from the Centers for Disease Control and Prevention (CDC) are published in specialty and subspecialty journals, rather than in top-tier journals ( 17 ).

The target journal’s website will include author guidelines, which will contain specific information about format requirements (eg, font, line spacing, section order, reference style and limit, table and figure formatting), authorship criteria, article types, and word limits for articles and abstracts.

We recommend returning to the previously drafted abstract and ensuring that it complies with the journal’s format and word limit. Authors should also verify that any changes made to the methods or results sections during the article’s drafting are reflected in the final version of the abstract. The abstract should not be written hurriedly just before submitting the manuscript; it is often apparent to editors and reviewers when this has happened. A cover letter to accompany the submission should be drafted; new and useful findings and the key message should be included.

Before submitting the manuscript and cover letter, authors should perform a final check to ensure that their paper complies with all journal requirements. Journals may elect to reject certain submissions on the basis of review of the abstract, or may send them to peer reviewers (typically 2 or 3) for consultation. Occasionally, on the basis of peer reviews, the journal will request only minor changes before accepting the paper for publication. Much more frequently, authors will receive a request to revise and resubmit their manuscript, taking into account peer review comments. Authors should recognize that while revise-and-resubmit requests may state that the manuscript is not acceptable in its current form, this does not constitute a rejection of the article. Authors have several options in responding to peer review comments:

  • Performing additional analyses and updating the article appropriately
  • Declining to perform additional analyses, but providing an explanation (eg, because the requested analysis goes beyond the scope of the article)
  • Providing updated references
  • Acknowledging reviewer comments that are simply comments without making changes

In addition to submitting a revised manuscript, authors should include a cover letter in which they list peer reviewer comments, along with the revisions they have made to the manuscript and their reply to the comment. The tone of such letters should be thankful and polite, but authors should make clear areas of disagreement with peer reviewers, and explain why they disagree. During the peer review process, authors should continue to consult with colleagues, especially ones who have more experience with the specific journal or with the peer review process.

There is no secret to successful scientific writing and publishing. By adopting a systematic approach and by regularly seeking feedback from trusted colleagues throughout the study, writing, and article submission process, authors can increase their likelihood of not only publishing original research articles of high quality but also becoming more scientifically productive overall.

Acknowledgments

The authors acknowledge PCD ’s former Associate Editor, Richard A. Goodman, MD, MPH, who, while serving as Editor in Chief of CDC’s Morbidity and Mortality Weekly Report Series, initiated a curriculum on scientific writing for training CDC’s Epidemic Intelligence Service Officers and other CDC public health professionals, and with whom the senior author of this article (P.Z.S.) collaborated in expanding training methods and contents, some of which are contained in this article. The authors acknowledge Juan Carlos Zevallos, MD, for his thoughtful critique and careful editing of previous Successful Scientific Writing materials. We also thank Shira Eisenberg for editorial assistance with the manuscript. This publication was supported by the Cooperative Agreement no. 1U360E000002 from CDC and the Association of Schools and Programs of Public Health. The findings and conclusions of this article do not necessarily represent the official views of CDC or the Association of Schools and Programs of Public Health. Names of journals and citation databases are provided for identification purposes only and do not constitute any endorsement by CDC.

The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions.

Suggested citation for this article: Iskander JK, Wolicki SB, Leeb RT, Siegel PZ. Successful Scientific Writing and Publishing: A Step-by-Step Approach. Prev Chronic Dis 2018;15:180085. DOI: https://doi.org/10.5888/pcd15.180085 .

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Humanities LibreTexts

4.1: Expository Essays

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Learning Objectives

  • Understand the function and use of expository essays
  • Identify eight types of expository essays
  • Apply expository essay structure

What Is an Expository Essay?

An essay that explains a writer’s ideas by defining, explaining, informing, or elaborating on points to allow the reader to clearly understand the concept.

Many of your future academic workplace writing assignments will be expository–explaining your ideas or the significance of a concept or action. An expository essay allows the writer the opportunity to explain his or her ideas about a topic and to provide clarity for the reader by using:

  • Explanations
  • Definitions

It may also include the writer outlining steps of a procedure in a way that is straightforward for the reader to follow. It is purely informative and often contains elements of summary.

Imagine you need to verbally explain a concept to your classmates, maybe a behavioural theory. What are the key elements on which you would focus? How would you organize the information? You could explain who came up with the theory, the specific area of study to which it is related, its purpose, and the significant details to explain the theory. Telling these four elements to your classmates would give them a complete, yet summarized, picture of the theory, so they could apply the theory in future discussions.

Although you did this verbally, you were still fulfilling the elements of an expository essay by providing definition, details, explanations, and maybe even facts if you have a really good memory. This is the same process that you would use when you write an expository essay. You may actually be doing this all the time; for example, when you are giving someone directions to a place or explaining how to cook something. In the following sections of the chapter, you will practise doing this more in different expository written forms.

The Structure of an Expository Essay

Sections versus paragraphs.

Before looking at the general structure of an expository essay, you first need to know that in your post-secondary education, you should not consider your essay as writing being constructed with five paragraphs as you might have been used to in high school. You should instead think of your essay in terms of sections (there may be five), and each section may have multiple paragraphs.

To understand further why you need to think beyond the five-paragraph essay, imagine you have been asked to submit a six-page paper (approximately 1,500 words). You already know that each paragraph should be roughly 75 to 200 words long. If you divide the required word count by five paragraphs (1,500 by 5), you end with 300 words per paragraph, way above the number you should have in a paragraph. If your paragraphs are too long, they likely have too many ideas and your reader may become confused. Your paragraphs should be two-third of a page at most, and never longer than a page.

Instead, if you think of your essays being divided into sections (with possibly more than one paragraph per section), your writing will likely be more organized and allow your reader to follow your presentation of ideas without creating too much distance between your paragraph’s supporting points and its topic sentence.

As you will see in Section 4.5, some essay forms may require even more than five paragraphs or sections because of how many points are necessary to address. For the rest of this chapter, the term paragraph will also imply section.

Sections of an Expository Essay

An expository essay, regardless of its purpose, should have at least five sections, which are:

  • Introduction
  • First body section/paragraph
  • Second body section/paragraph
  • Third body section/paragraph
  • Conclusion.

The introduction should state the topic of your paper: your thesis statement as well as brief signposts of what information the rest of the paper will include. That is, you only want to mention the content of the body paragraphs; you do not want to go in to a lot of detail and repeat what will be in the rest of the essay.

The first body section or paragraph should focus on one of your main points and provide evidence to support that point. There should be two to three supporting points: reasons, facts, statistics, quotations, examples, or a mix of these. Both the second and third body sections should follow the same pattern. Providing three body sections with one point each that supports the thesis should provide the reader with enough detail to be convinced of your argument or fully understand the concept you are explaining. However, remember that some sections will require more explanation, and you may need to separate this information into multiple paragraphs.

You can order your sections in the most logical way to explain your ideas. For example, if you are describing a process, you may use chronological order to show the definite time order in which the steps need to happen. You will learn about the different ways to organize your body paragraphs in the next chapter.

The concluding paragraph , or conclusion, can be a little tricky to compose because you need to make sure you give a concise summary of the body paragraphs, but you must be careful not to simply repeat what you have already written. Look back at the main idea of each section/paragraph, and try to summarize the point using words different from those you have already used. Do not include any new points in your concluding paragraph.

Consider Your Audience: How Much Do They Know?

Later in this chapter, you will work on determining and adapting to your audience when writing, but with an expository essay, since you are defining or informing your audience on a certain topic, you need to evaluate how much your audience knows about that topic (aside from having general common knowledge). You want to make sure you are giving thorough, comprehensive, and clear explanations on the topic. Never assume the reader knows everything about your topic (even if it is covered in the reader’s field of study). For example, even though some of your instructors may teach criminology, they may have specialized in different areas from the one about which you are writing; they most likely have a strong understanding of the concepts but may not recall all the small details on the topic. If your instructor specialized in crime mapping and data analysis for example, he or she may not have a strong recollection of specific criminological theories related to other areas of study. Providing enough background information without being too detailed is a fine balance, but you always want to ensure you have no gaps in the information, so your reader will not have to guess your intention. Again, we will practise this more in Section 4.9.

What Comes Next?

In the next eight sections (4.2 through 4.9), we will look at different expository modes, or rhetorical modes, you will often be assigned. These are:

  • Illustration
  • Description
  • Classification
  • Process analysis
  • Compare and contrast
  • Cause and effect

Rhetorical modes refers simply to the ways to communicate effectively through language. As you read about these modes, keep in mind that the rhetorical mode a writer chooses depends on his or her purpose for writing. Sometimes writers incorporate a variety of modes in any one essay. In this chapter, we also emphasize the rhetorical modes as a set of tools that will allow you greater flexibility and effectiveness in communicating with your audience and expressing your ideas.

In a few weeks, you will need to submit your first essay–an expository sample–and you will be given the choice of topic: one from each of the modes. Think about which types of expository essays are easier and which are more challenging for you. As mentioned, as you progress through your studies, you will be exposed to each of these types. You may want to explore a mode you find more challenging than the others in order to ensure you have a full grasp on developing each type. However, it is up to you. As you work through the sections, think about possible topics you may like to cover in your expository essay and start brainstorming as you work through the self-practice exercises.

After we explore each of the individual modes in the eight sections that follow, we will look at outlining and drafting; it is at this point you will want to fine tune and narrow the topic you will write about, so you can focus on that when doing the exercises.

Home / Guides / Writing Guides / Paper Types / How to Write an Expository Essay

How to Write an Expository Essay

Every student has to write an expository essay at least once in their educational career. These are actually fairly simple essays to write, but they do require some serious research skills. Like most academic essays, the expository essay requires formal writing with an introduction, body, and conclusion.

Guide Overview

  • Focus on the thesis
  • Listen to the assignment
  • Explain, don’t argue
  • Revise and edit, revise and edit
  • Choosing the right topic

Tips for Writing a Kick-Butt Essay

Want to really impress your professor? Here are a few ways you can turn an ordinary essay into something that will blow their socks off.

Focus on the Thesis

Your thesis is the central point of the entire essay, so if it’s amazing, you’re off to a great start. Begin with this and make sure you decide on something that is impressive to kick off the essay.

Listen to the Assignment

Your professor may give you hints on what they’re looking for. If you just write down the basics of the assignment, you could miss out on some key points. For example, your professor may hint at a preferred topic or give tips that could result in a higher score. Write it all down and then analyze what is wanted before you write.

Long before you actually put pen to paper or fingers to keyboard to write the essay, you need to complete the pre-writing phase. This is where you do research and outline your essay. You’ll be amazed at how much better your writing is when you have these basic elements in place first. If you need help with these basic elements consider using an Expository Essay Template.

Explain, Don’t Argue

If you’re not careful, an expository essay can turn into a persuasive or argumentative essay. Focus on explaining the topic, rather than convincing people of something about it.

Revise and Edit, Revise and Edit

Going over the essay once to edit and polish isn’t really enough. If you’re tight on time, such as when writing an essay for an exam, just once will do. However, if you have time, it’s a good idea to edit immediately, then let the essay sit overnight or even longer. When you come back, you won’t be as close to the writing and can look at it more objectively.

Choosing the Right Topic

Topics for an expository essay vary widely, but ideally, you should select something you’re interested in writing about. Topics can answer a question such as “How can we prevent bullying in school?” or they can describe something like a historical building in your area. Other interesting topics to inspire you include:

  • How does technology affect our relationships?
  • How to treat a burn
  • What are the must-haves for a freshman in college?
  • How to handle anxiety attacks naturally
  • How to train your dog to stop barking on command
  • Research the history of a monument in your area
  • Why roller skating is a great exercise

As you can see, there’s no limit to the types of topics you can choose for your essay and it really comes down to what the professor assigns you and what you enjoy writing about. How narrow your topic is will also depend on how much you plan to write. An entire history of the Civil War won’t fit into two page, for example, so you’ll need to narrow it down to a specific battle or element of the Civil War.

Writing an expository essay can actually be a fun experience if you approach it the right way. When you enjoy the topic and are interested in it, your essay will show that and will stand out from those written out of boredom.

Finally, if you’re ever facing writer’s block for your college paper, consider WriteWell Essay Templates to help you get started.

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expository essay

What is expository essay definition, usage, and literary examples, expository essay definition.

An  expository essay  [ik-SPOZ-ih-tohr-ee ess-ay] is an essay in which the writer researches a topic and uses evidence to inform their readers or clarify the topic. They can take many forms, including a how-to essay, an essay that defines something, or an essay that studies a problem and offers a solution.

The Five-Paragraph Model

Most expository essays follow the five-paragraph essay model:

  • Introduction:  The introduction contains the thesis statement or main point of the essay. Here, the writer describes the subject and gives necessary  context .
  • Body:  This section is usually three or more paragraphs and offers supporting evidence for the thesis.
  • Conclusion:  The conclusion revisits the thesis and summarizes the writer’s main points.

Types of Expository Essays

There are several types of expository essays that can be written.

  • Cause and Effect:  These essays question why something happened and the outcome of that occurrence. For example, an essay of this type might question why there’s a large homeless population in Seattle and what effects it has on the city and its citizens.
  • Classification:  These break a broad subject down into several, in-depth subcategories. A classification essay might study the various kinds of movies, define genres, and break the most common genres down by subgenre (for example, action thriller and action adventure as subgenres of the action genre).
  • Compare and Contrast:  These essays lay out the similarities and differences of at least two subjects. One such essay might compare two different novels by the same author. These essays can explore the pros and cons of different choices as well, like living in the city versus living in the country.
  • Definition:  As indicated, a definition essay describes or defines something. For example, it might define the internet and provide a detailed explanation of how it works.
  • How-To:  Also called a process essay, a how-to essay gives the reader steps for creating or doing something. For example, a process essay might walk its reader through setting a table, step by step.
  • Problem and Solution:  This type of essay explores a problem and, using evidential support, offers potential solutions. For example, a writer might consider the example of Seattle’s homeless population, cite a solution that other cities have used successfully, and propose that same solution for Seattle.

Other Forms of Expository Writing

In addition to the aforementioned, there are other uses for expository writing. Most commonly:

  • Newspaper articles
  • Encyclopedic entries
  • Manuals/assembly instructions

Expository vs. Argumentative Essays

Expository essays are like argumentative essays in that they both require research. Unlike argumentative essays, expository essays are meant to inform their audience rather than persuade it.

Argumentative essays are often controversial and contain the writer’s personal opinions, whereas expository essays give factual information and explore a topic from many  perspectives . Educational spheres often use expository essays to test writing ability, reading comprehension, and/or the writer’s understanding of a topic.

Examples of Expository Essays

1. Susan Sontag, “Notes on ‘Camp’”

This is a definition essay that explores the meaning and usage of the slang word  camp . When she wrote the essay in 1964, people used the word to describe a person or thing as exaggerated, effeminate, or theatrical. Sontag suggests that camp isn’t a solid concept but rather a sensibility, and she acknowledges its connection to contemporary gay culture. Her definition of camp is given in the following passage:

[Camp] is not a natural mode of sensibility, if there be any such. Indeed the essence of Camp is its love of the unnatural: of artifice and exaggeration. And Camp is esoteric–something of a private code, a badge of identity even, among small urban cliques.

2. David Foster Wallace, “Consider the Lobster”

Herein, Wallace reviews the 2003 Main Lobster Festival and questions the morality of boiling lobsters alive. He examines the problem from all facets, including whether a lobster feels pain, without directly asserting his opinion. After descriptions of the festival, physical properties of lobsters, and the common use of the crustaceans, Wallace poses the main question of the essay:

So then here is a question that’s all but unavoidable at the World’s Largest Lobster Cooker, and may arise in the kitchens across the U.S. Is it all right to boil a sentient creature alive just for our gustatory pleasure? A related set of concerns: Is the previous question irksomely PC or sentimental? What does “all right” even mean in this context? Is it all just a matter of individual choice?

3. Rebecca Solnit, “The Longest War”

From Solnit’s 2014 book of essays,  Men Explain Things to Me , “The Longest War” explores issues of male violence against women. Solnit uses both statistical and  anecdotal  evidence to inform her audience of the issue, which supports some of her argumentative essays that appear later in the book:

[T]hough a rape is reported only every 6.2 minutes in this country, the estimated total is perhaps five times as high. Which means that there may be very nearly a rape a minute in the United States. It all adds up to tens of millions of rape victims. A significant portion of the women you know are survivors.

Further Resources on Expository Essays

You can find more examples of expository essays on  LiteraryDevices.net .

Bibme.org  offers guidance for writing expository essays.

Essaytigers.com  provides step-by-step writing instructions and an additional argumentative essay and expository essay comparison.

Related Terms

  • Argumentative Essay
  • Expository Writing

expository essay on scientific method

How to Write an Expository Essay Better, Faster, and In a More Satisfying Manner

expository essay

What Is an Expository Essay?

If you find yourself here, it's likely because you've recently received an assignment for an expository essay, or perhaps you're drawn to exploring ideas beyond the surface level. Whatever the reason, we're here to guide you through the expository essay definition, its outline, and examples.

Let's start by understanding what an expository essay is and its purpose. In simple terms, an expository essay provides information on a particular topic, elucidating aspects of a situation, person, idea, or event and conveying knowledge to the reader. Unlike persuasive writing, it doesn't seek to sway the audience's opinion but relies on facts to inform and educate about the subject. 

From sharing personal experiences to outlining work assignments, expository writing covers a broad spectrum of questions, making it arguably the most prevalent form of writing worldwide. If at any point you feel overburdened with assignments, use our essay writing services to relax and wrap up your homework faster.

expository essay on scientific method

Why Students Have to Write Expository Essays?

Expository writing serves a distinct purpose – to impart knowledge to the reader. While it may offer entertainment or persuasion as secondary benefits, these are not the primary objectives of the author. A well-crafted piece of expository writing showcases the author's expertise on the subject and often reveals their journey of acquiring knowledge.

For instance, consider the task of crafting an essay about a mock trial your class conducted. In an expository essay, you would begin by introducing the assignment and detailing the case your class tackled during the trial. Subsequent body sections would systematically elaborate on each stage of the mock trial process – covering discovery, opening statements, cross-examination, closing statements, jury deliberation, and the final verdict – illustrating how your class navigated through each phase. Concluding the essay, you would present the verdict reached by your class and the judge's ruling.

Crucially, your expository essay on the mock trial does not take a stance on whether the ruling was right or wrong. Instead, it elucidates the procedural intricacies your class followed, offering a comprehensive understanding of how real court cases progress through the legal system. In essence, your essay is a presentation of facts and processes rather than expressing personal opinion or commentary.

Types of Expository Essays

As previously noted, expository essays manifest in various forms. These encompass the following types:

Classification 

In the realm of classification essays, you delve into various subjects within a single category, examining the distinctive characteristics of each subject while highlighting the traits that connect them to others in the same category. For instance, a classification essay on herding dogs could commence with a thesis statement elucidating the differences between herding breeds from other dog categories. Subsequent paragraphs would then delve into specific herding breeds, such as corgis, collies, heelers, and more.

A definition essay elucidates its subject by presenting factual data. To illustrate, your definition essay might challenge prevalent myths surrounding a historical event by offering firsthand accounts from primary sources. It would also delve into relevant social, political, and economic trends that influenced the event, shaping perceptions of it. We’d also like to recommend you read our guide on how to write a descriptive essay .

A process essay guides the reviewer through the steps required to complete a task akin to a recipe. The opening passage of a process essay outlines the covered process and the anticipated result. Each body chapter corresponds to a step in the process, leading to a conclusion that explains what the reader should have accomplished by following each step.

Compare and Contrast

In a compare-and-contrast essay, your key statement is substantiated by examining the differences and similarities between cited sources. For instance, an essay comparing and contrasting school dress codes might scrutinize variations in allowed clothing items and the precision of language in each policy. It could also explore the degree of ambiguity present in the rules of each dress code.

Cause and Effect 

True to its name, a cause-and-effect essay delves into how specific events or actions trigger subsequent occurrences. These essays often trace chains of events to comprehend the reasons behind current circumstances. An example could be a cause-and-effect essay tracking the influence of shifting market trends on regional industries over the past few decades, ultimately shaping the present local economy. Our guide on writing a narrative essay could also help increase your knowledge and skills.

Expository Essay Structure

Structuring an expository essay follows the familiar format applicable to any essay assignment: an introduction, a main body for elaboration and support, and a concluding section that reinforces your thesis and restates key points. While there's no strict word count requirement unless specified by your instructor, your essay should comprehensively express your ideas, maintaining a logical and accurate flow. Adhering to the following format, with the flexibility to adjust the number of sections based on supporting points, will effectively guide your expository essay:

Expository essay outline

Introduction

In this opening section, you introduce your essay topic, present your thesis statement, and aim to engage the reader with captivating facts. Providing the necessary context and introducing supporting evidence help your audience grasp the essence of your focal sentence.

First Body Paragraph

Dedicate a separate passage for each supporting point you make. While the traditional five-paragraph structure is often considered standard, you may require more subsections to convey your thesis statement thoroughly.

Second Body Paragraph

Write smooth transitions between verses using appropriate transition words and sentences. These transitional elements convey the relationships between subparagraphs, clarifying the purpose of each point and its contribution to your overall argument.

Third Body Paragraph

As you approach the final writing clause, focus on transitioning to your conclusion. Avoid premature summarization; instead, offer insightful details comparable to your earlier items.

In the concluding section, restate your thesis statement and succinctly recap the key points covered in your body. Ensure a cohesive closure, addressing any remaining questions your professor might have and tying up loose ends neatly.

Expository Essay Writing Tips

While you now have a solid understanding of the expository essay format, there are additional considerations to bear in mind. This section will guide you through specific steps to take when tackling the task of writing an expository essay.

How to write an expository essay

Do Your Research

Start by thoroughly reviewing the assignment guidelines to ensure a clear understanding of requirements, including potential topic restrictions and word counts. Consider writing down different concepts aligned with the types of expository essays and gauge which type best suits your chosen theme. Reflect on class discussions, teacher expectations, and personal interests to generate a list of potential questions. Conduct preliminary research on each topic to evaluate the availability of reputable sources and deepen your understanding, leading to a well-informed and engaging expository essay subject.

Create an Outline

Once you've selected a topic, initiate research with a focus on developing body paragraphs, considering three main ways to explain the topic. While researching, contemplate potential thesis statements, allowing them to evolve organically with the accumulation of evidence. Develop an expository essay outline, organizing information under the relevant chapters to streamline the writing process. Writing a preliminary thesis statement by the end of the planning stage provides a clear direction for your research and writing.

Prepare the First Draft

Now is the time to translate your outline into full sentences. It is often useful to leave the introduction till the end because after writing the central paragraphs, you will have a better idea of what to say in an introduction, but make sure that you write down your thesis statement. Use the information you have found to create a cohesive analysis of the topic in each paragraph. Make sure that the information you present is on point and connects to the other facts around it. Think about what the purpose of each body section is and question whether the info you are presenting fits that purpose or not. Make sure to use transition words within the paragraph and transition sentences between paragraphs to improve overall comprehensibility and flow.

Finish the Draft

Go over the first draft of the expository essay and focus on whether the different paragraphs make sense or not. Don't be afraid of writing sections over or completely getting rid of some pieces of information. As you write your draft, new ways of expressing the testimony that will make the overall text more powerful can come to mind. Make sure that you are not trying to make a persuasive argument and that you are using facts rather than opinions as evidence. 

Check each sentence to make sure that it is clear and that it fits the purpose of the paragraph it is in. Look at the details you have included and ensure they are useful and enhance your understanding of the topic. It is better to have less information than more if the supporting data is distracting or does not add anything to the expository essay. Try to read the paper as if it is the first time you are coming across the subject matter to see if it makes sense or not. Congratulations, you are just one step away from writing and submitting an A-grade expository paper!

Revise the Document

As the writing stage is over, scan through the final draft of your expository essay to check for formatting errors, grammatical errors, spelling mistakes, etc., and make sure that it complies with all the guidelines of the assignment. Finally, ask a friend or relative to go over the paper to do the last check. If you feel like you still need to make a lot of changes, don't be disheartened, spend the extra time to consult our persuasive essay guide for more insights. 

Expository Essay Example

In this section, we’d like to present an example of an expository essay written by one of our writers. Check it out, get inspired, and you’ll be able to write a composition of your own!

expository essay on scientific method

FAQs About Expository Essays

What is the purpose of an expository essay, how to start an expository essay, how to write a thesis for an expository essay, how to write a conclusion for an expository essay, how are a persuasive essay and an expository essay different.

expository essay on scientific method

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How to Write Excellent Expository Essays

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WHAT IS AN EXPOSITORY ESSAY?

An Expository essay ‘exposes’ information to the reader to describe or explain a particular topic logically and concisely.

The purpose of expository writing is to educate or inform the reader first and foremost.

Though the term is sometimes used to include persuasive writing , which exposes us to new ways of thinking, a true expository text does not allow the writer’s personal opinion to intrude into the text and should not be confused.

Expository Writing follows a structured format with an introduction, body paragraphs presenting information and examples, and a conclusion summarising key points and reinforcing the thesis. Common expository essays include process, comparison/contrast, cause and effect, and informative essays.

EXPOSITORY ESSAY STRUCTURE

TEXT ORGANIZATION Organize your thoughts before writing.

CLARITY Use clear and concise wording. There is no room for banter.

THESIS STATEMENT State position in direct terms.

TOPIC SENTENCE Open each paragraph with a topic sentence.

SUPPORTING DETAIL Support the topic sentence with further explanation and evidence.

LINK End each body paragraph by linking to the next.

EXPOSITORY ESSAY TYPES

PROCESS Tell your audience how to achieve something, such as how to bake a cake.

CAUSE & EFFECT Explore relationships between subjects, such as climate change and its impact.

PROBLEM & SOLUTION Explain how to solve a problem, such as improving physical fitness.

COMPARE & CONTRAST Compare and contrast two or more items, such as life in China life vs life in the United States or Australia.

DEFINITION Provides a detailed definition of a word or phrase, such as self-confidence.

CLASSIFICATION Organizes things into categories or groups, such as types of music.

STRUCTURE & FEATURES OF EXPOSITORY WRITING

While there are many types of expository essays, the basic underlying structure is the same. The Hamburger or 5-Paragraph Essay structure is an excellent scaffold for students to build their articles. Let’s explore the expository essay outline.

INTRODUCTION:

This is the top bun of the burger, and here the student introduces the exposition topic. This usually consists of a general statement on the subject, providing an essay overview. It may also preview each significant section, indicating what aspects of the subject will be covered in the text. These sections will likely relate to the headings and subheadings identified at the planning stage.

If the introduction is the top bun of the burger, then each body paragraph is a beef patty. Self-contained in some regards, each patty forms an integral part of the whole.

EXPOSITORY PARAGRAPHS

Each body paragraph deals with one idea or piece of information. More complex topics may be grouped under a common heading, and the number of paragraphs will depend on the complexity of the topic. For example, an expository text on wolves may include a series of paragraphs under headings such as habitat, breeding habits, what they eat, etc.

Each paragraph should open with a topic sentence indicating to the reader what the paragraph is about. The following sentences should further illuminate this main idea through discussion and/or explanation. Encourage students to use evidence and examples here, whether statistical or anecdotal. Remind students to keep things factual – this is not an editorial piece for a newspaper!

expository essays | BlueandCreamSimpleExpositoryGraphicOrganizer | How to Write Excellent Expository Essays | literacyideas.com

Expository writing is usually not the place for flowery flourishes of figurative imagery! Students should be encouraged to select a straightforward language that is easy for the reader to understand. After all, the aim here is to inform and explain, and this is best achieved with explicit language.

As we’ve seen, several variations of the expository essay exist, but the following are the most common features students must include.

The title should be functional. It should instantly inform the reader what they will learn about in the text. This is not the place for opaque poetry!

A table of contents in long essays will help the reader locate helpful information quickly. Usually, the page numbers found here will be linked to headings and subheadings to be found in the text.

HEADINGS / SUBHEADINGS:

These assist the reader in finding information by summarizing the content in their wording.

expository essays | How to Write Excellent Expository Essays | literacyideas.com

Usually listed alphabetically, the glossary defines unusual or topic-specific vocabulary and is sometimes accompanied by pictures, illustrations etc.

The index lets the reader identify where to find specific information in longer texts. An index is much more detailed than a table of contents.

VISUAL FORMS OF INFORMATION

Expository essays sometimes support the text with visuals, such as:

  • Pictures / Illustrations / Photographs:

These can be used to present a central idea or concept within the text and are often accompanied by a caption explaining what the image shows. Photographs can offer a broad overview or a close-up of essential details.

expository essays | How to Write Excellent Expository Essays | literacyideas.com

Diagrams are a great way to convey complex information quickly. They should be labelled clearly to ensure the reader knows what they are looking at.

  • Charts and Graphs:

These are extremely useful for showing data and statistics in an easy-to-read manner. They should be labelled clearly and correspond to the information in the nearby text.

Maps may be used to explain where something is or was located. 

THE ULTIMATE NONFICTION WRITING TEACHING RESOURCE

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  • 270  pages of the most effective teaching strategies
  • 50+   digital tools  ready right out of the box
  • 75   editable resources  for student   differentiation  
  • Loads of   tricks and tips  to add to your teaching tool bag
  • All explanations are reinforced with  concrete examples.
  • Links to  high-quality video  tutorials
  • Clear objectives  easy to match to the demands of your curriculum

Types of expository essay

There are many different types of expository texts (e.g. encyclopaedias, travel guides, information reports , etc.), but there are also various expository essays, with the most common being.

  • Process Essays
  • Cause and Effect Essays
  • Problem and Solution Essays
  • Compare and Contrast Essays
  • Definition Essays
  • Classification Essays

We will examine each of these in greater detail in the remainder of this article, as they have slight nuances and differences that make them unique. The graphic below explains the general structure for all text types from the expository writing family.

THE PROCESS ESSAY

expository essays | expository essay types1 | How to Write Excellent Expository Essays | literacyideas.com

This how-to essay often takes the form of a set of instructions. Also known as a procedural text , the process essay has very specific features that guide the reader on how to do or make something.

To learn more about this type of writing, check out our information-packed article here .

Features of a process essay

Some of the main features of the process essay include:

  • ‘How to’ title
  • Numbered or bullet points
  • Time connectives
  • Imperatives (bossy words)
  • List of resources

Example Expository Process Essay:

The cause and effect essay.

expository essays | expository essay types4 | How to Write Excellent Expository Essays | literacyideas.com

The purpose of a cause-and-effect essay is to explore the causal relationships between things. Essays like this often bring the focus back to a single cause. These essays frequently have a historical focus.

The text should focus on facts rather than assumptions as an expository essay. However, cause-and-effect essays sometimes explore hypothetical situations too.

There are two main ways to structure a cause-and-effect essay.

The Block Structure presents all the causes first. The writer then focuses on the effects of these causes in the second half of the essay.

The Chain Structure presents each cause and then immediately follows with the effects it created.

expository essays | expository essay template4 | How to Write Excellent Expository Essays | literacyideas.com

Example Expository Cause and Effect Essay:

The problem and solution essay.

expository essays | expository essay types5 | How to Write Excellent Expository Essays | literacyideas.com

In this type of essay, the writer first identifies a problem and then explores the topic from various angles to ultimately propose a solution. It is similar to the cause-and-effect essay.

While the problem and solution essay can use the block and chain structures as outlined above – substitute cause with problem and effect with a solution – it will also usually work through the following elements:

  • Identifies a problem
  • Contains a clear thesis statement
  • Each paragraph has a topic sentence
  • Supports with facts, examples, evidence
  • The conclusion summarizes the main points

Suggested Title: What Can Be Done to Prevent Bullying in Schools?

Example Expository Problem and Solution Essay:

The compare and contrast essay.

expository essays | expository essay types6 | How to Write Excellent Expository Essays | literacyideas.com

In this type of essay, students evaluate the similarities and differences between two or more things, ideas, people, etc. Usually, the subjects will belong to the same category.

The compare-and-contrast expository essay can be organized in several different ways. Three of these are outlined below.

In the three structures outlined, it is assumed that two subjects are being compared and contrasted. Of course, the precise number of paragraphs required in the text will depend on the number of points the student wishes to make and the number of subjects being compared and contrasted.

Suggested Title: In-Class or Remote Learning: Which Is Best?

expository essays | expository essay template1 | How to Write Excellent Expository Essays | literacyideas.com

DEFINITION ESSAYS

expository essays | expository essay types2 | How to Write Excellent Expository Essays | literacyideas.com

This type of essay provides a detailed description and definition of a word or phrase. It can be a concrete term, such as car or glass, or a more abstract concept, such as love or fear .

A definition essay comprehensively explains a term’s purpose and meaning. It will frequently contain some or all of the following elements:

  • A definition of the term
  • An analysis of its meaning
  • The etymology of the term
  • A comparison to related terms
  • Examples to illustrate the meaning
  • A summary of the main points

Example Expository Definition Essay:

CLASSIFICATION ESSAYS

expository essays | expository essay types3 | How to Write Excellent Expository Essays | literacyideas.com

Like definition essays, a classification essay sorts or organizes things into various groups or categories and explains each group or category in detail.

Classification essays focus on:

  • Sorting things into functional categories
  • Ensuring each category follows a common organizing principle
  • Provides examples that illustrate each category.

Example Expository Classification Essay:

expository essays | what is an expository essay | How to Write Excellent Expository Essays | literacyideas.com

One of the best ways to understand the different features of expository essays is to see them in action. The sample essay below is a definition essay but shares many features with other expository essays.

expository essays | expository essay example | How to Write Excellent Expository Essays | literacyideas.com

EXPOSITORY WRITING PROMPTS

expository essays | How to Write Excellent Expository Essays | literacyideas.com

Examples of Expository Essay Titles

 Expository essay prompts are usually pretty easy to spot.

 They typically contain keywords that ask the student to explain something, such as “define,” “outline,” “describe,” or, most directly of all, “explain.”

 This article will examine the purpose of an expository essay and its structure. It will also examine the primary language and stylistic features of this vital text type.

 After this, we’ll explore five distinct tips for helping your students get the most out of writing their expository essays.

Expository Essays vs Argumentative Essays

 Expository essays are often confused with their close cousin, the argumentative essay. Still, it’s easy to help students distinguish between the two by quickly examining their similarities and differences.

 In an expository essay, students will attempt to write about a thing or a concept neutrally and objectively, unlike an argumentative essay where the writer’s opinions permeate the text throughout. Simple as it sounds, this may take some doing for some students as it requires the writer to refine their personal voice almost out of existence!

 Luckily, choosing the correct viewpoint from which to write the essay can go a long way to helping students achieve the desired objectivity. Generally, students should write their expository essays from the third-person perspective.

Contrastingly, argumentative essays are subjective in nature and will usually be written from the first-person perspective as a result.

 In an expository essay, the text’s prime focus is the topic rather than the writer’s feelings on that topic. For the writer, disassociating their personal feelings on a topic is much easier when they’re a step removed from the narration by using the third-person POV rather than the first-person POV.

Expository Essay Tips

Follow these top tips from the experts to craft an amazing expository essay.

expository essays | img 60ffaf0c39e69 | How to Write Excellent Expository Essays | literacyideas.com

 Tip #1: Choose the Right Tool for the Job

writing-tools

Surprising as it may seem, not all expository essays are created equal.

 In fact, there are several different types of expository essays, and our students must learn to recognize each and choose the correct one for their specific needs when producing their own expository essays.

 To do this, students will need to know the 5 types of expository essays:

  • The Cause and Effect Essay : This type of essay requires that the writer explain why something happened and what occurred due to that event and subsequent events. It explores the relationship between people, ideas, events, or things and other people, ideas, events, or things.
  • The Compare and Contrast Essay: In a compare and contrast essay, the writer examines the similarities and differences between two subjects or ideas throughout the body of the piece and usually brings things together in an analysis at the end .
  • The Descriptive Essay: This is a very straightforward expository essay with a detailed description or explanation of a topic. The topic may be an event, place, person, object, or experience. This essay’s direct style is balanced with the freedom of the writer can inject some of their creativity into the description.
  • The Problem and Solution Essay : In this expository essay, the student will work to find valid solutions to a specific problem or problem.
  • The Process Essay : Also called a how-to essay, this essay type is similar to instruction writing, except in essay form. It provides a step-by-step procedure breakdown to teach the reader how to do something.

 When choosing a specific topic to write about, students should consider several factors:

 ●      Do they know the topic well enough to explain the ins and outs of the subject to an unfamiliar audience?

 ●      Do they have enough interest in this topic to sustain thorough research and writing about it?

 ●      Is enough relevant information and credible sources available to fuel the student’s writing on this topic?

Tip # 2: Research the Topic Thoroughly

Regardless of which type of expository essay your students are working on, they must approach the research stage of the writing process with diligence and focus. The more thorough they are at the research stage, the smoother the remainder of the writing process will be.

A common problem for students while researching is that sometimes they don’t have a clear understanding of the objective of their research. They lack a clear focus on their efforts.

Research is not mindlessly scanning documents and scrawling occasional notes. As with any part of the writing process, it begins with determining clear objectives.

Often, students will start the research process with a broad focus, and as they continue researching, they will naturally narrow their focus as they learn more about the topic.

Take the time to help students understand that writing isn’t only about expressing what we think; it’s also about discovering what we think.

When researching, students should direct their efforts to the following:

REad our complete guide to researching here

  • Gather Supporting Evidence : The research process is not only for uncovering the points to be made within the essay but also the evidence to support those points. The aim here is to provide an objective description or analysis of the topic; therefore, the student will need to gather relevant supporting evidence, such as facts and statistics, to bolster their writing. Usually, each paragraph will open with a topic sentence, and subsequent sentences in the paragraph will focus on providing a factual, statistical, and logical analysis of the paragraph’s main point.
  • Cite Sources : It’s an essential academic skill to be able to cite sources accurately. There are several accepted methods of doing this, and you must choose a citation style appropriate to your student’s age, abilities, and context. However, whatever style you choose, students should get used to citing any sources they use in their essays, either in the form of embedded quotations, endnotes, or bibliography – or all three!
  • Use Credible Sources: The Internet has profoundly impacted knowledge sharing as the Gutenberg Press did almost 600 years ago. It has provided unparalleled access to the sum total of human knowledge as never before, with each student having a dizzying number of sources available at their fingertips. However, we must ensure our students understand that not all sources are created equal. Encourage students to seek credible sources in their research and filter out the more dubious sources. Some questions students can ask themselves to help determine a source’s credibility include:

●      Have I searched thoroughly enough to find the most relevant sources for my topic?

●      Has this source been published recently? Is it still relevant?

●      Has the source been peer-reviewed? Have other sources confirmed this source?

●      What is the publication’s reputation?

●      Is the author an expert in their field?

●      Is the source fact-based or opinion-based?

Tip #3: Sketch an Outline

Every kid knows you can’t find the pirate treasure without a map, which is true of essay writing. Using their knowledge of the essay’s structure, students start whipping their research notes into shape by creating an outline for their essay.

The 5-paragraph essay or ‘Hamburger’ essay provides a perfect template for this.

Students start by mapping out an appealing introduction built around the main idea of their essay. Then, from their mound of research, they’ll extract their most vital ideas to assign to the various body paragraphs of their text.

Finally, they’ll sketch out their conclusion, summarize their essay’s main points, and, where appropriate, make their final statement on the topic.

Tip #4: Write a Draft

Title chosen? Check! Topic researched? Check! Outline sketched? Check!

Well, then, it’s time for the student to begin writing in earnest by completing the first draft of their essay.

They’ll already have a clear idea of the shape their essay will take from their research and outlining processes, but ensure your students allow themselves some leeway to adapt as the writing process throws up new ideas and problems.

That said, students will find it helpful to refer back to their thesis statement and outline to help ensure they stay on track as they work their way through the writing process towards their conclusions.

As students work through their drafts, encourage them to use transition words and phrases to help them move smoothly through the different sections of their essays.

Sometimes, students work directly from an outline as if on a checklist. This can sometimes be seen as the finished essay resembling Frankenstein. That is an incongruous series of disparate body parts crudely stitched together.

Learning to use transitions effectively will help students create an essay that is all of a whole, with all the joins and seams sanded and smoothed from view.

Tip #5: Edit with a Fresh Pair of Eyes

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Once the draft is complete, students enter the final crucial editing stage.

But, not so hasty! Students must pencil in some time to let their drafts ‘rest’. If the editing process occurs immediately after the student finishes writing their draft, they’ll likely overlook much.

Editing is best done when students have time to gain a fresh perspective on their work. Ideally, this means leaving the essay overnight or over a few nights. However, practically, this isn’t always possible. Usually, though, it will be possible for students to put aside their writing for a few hours.

With the perspective that only time gives, when returning to their work, students can identify areas for improvement that they may have missed. Some important areas for students to look at in the editing process include:

  • Bias : Students need to remember the purpose of this essay is to present a balanced and objective description of the topic. They need to ensure they haven’t let their own personal bias slip through during the writing process – an all too easy thing to do!
  • Clarity : Clarity is as much a function of structure as language. Students must ensure their paragraphs are well organized and express their ideas clearly. Where necessary, some restructuring and rewriting may be required.
  • Proofread: With stylistic and structural matters taken care of, it’s now time for the student to shift their focus onto matters of spelling , vocabulary choice, grammar, and punctuation. This final proofread represents the last run-through of the editing process. It’s the students’ final chance to catch mistakes and errors that may bias the assessor (aka You! ) against the effectiveness of the piece of writing. Where the text has been word-processed, the student can enlist inbuilt spelling and grammar checkers to help. Still, they should also take the time to go through each line word by word. Automatic checkers are a helpful tool, but they are a long way from infallible, and the final judgement on a text should employ the writer’s own judgement.

Expository essays are relatively straightforward pieces of writing. By following the guidelines mentioned above and practising them regularly, students can learn to produce well-written expository essays quickly and competently.

Explaining and describing events and processes objectively and clearly is a useful skill that students can add to their repertoire. Although it may seem challenging at first, with practice, it will become natural.

To write a good expository essay, students need a good understanding of its basic features and a firm grasp of the hamburger essay structure. As with any writing genre, prewriting is essential, particularly for expository writing.

Since expository writing is designed primarily to inform the reader, sound research and note-taking are essential for students to produce a well-written text. Developing these critical skills is an excellent opportunity for students through expository writing, which will be helpful to them as they continue their education.

Redrafting and editing are also crucial for producing a well-written expository essay. Students should double-check facts and statistics, and the language should be edited tightly for concision.

And, while grading their efforts, we might even learn a thing or two ourselves!

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COMMENTS

  1. Induction, Deduction, and the Scientific Method Expository Essay

    A problem forms the basis of any scientific method, inductive or deductive. It triggers scientists into developing criteria that fights the problem whether simple or complicated. "Solution of problems…is achieved by long strings of mixed inductive and deductive inferences…" (Pirsig Para. 9). It is importance to state the problem right ...

  2. Scientific Method: Role and Importance

    Scientific Method: Role and Importance Essay. The scientific method is a problem-solving strategy that is at the heart of biology and other sciences. There are five steps included in the scientific method that is making an observation, asking a question, forming a hypothesis or an explanation that could be tested, and predicting the test.

  3. How to Write an Expository Essay

    The structure of your expository essay will vary according to the scope of your assignment and the demands of your topic. It's worthwhile to plan out your structure before you start, using an essay outline. A common structure for a short expository essay consists of five paragraphs: An introduction, three body paragraphs, and a conclusion.

  4. How to Write an Expository Essay

    There are six different types of expository essay, each with a different purpose. The six types are: Process essay - describing a task, a method, how to complete something Cause and effect essay - why something happened and its effects Problem-solution essay - provide analysis of problems and their solutions Compare and contrast essay - describe the similarities and differences between ...

  5. Expository Essays

    The five-paragraph Essay. A common method for writing an expository essay is the five-paragraph approach. This is, however, by no means the only formula for writing such essays. If it sounds straightforward, that is because it is; in fact, the method consists of: an introductory paragraph; three evidentiary body paragraphs; a conclusion; Resources

  6. What is the Scientific Method: How does it work and why is it important

    Article. Research Process. The scientific method is a systematic process involving steps like defining questions, forming hypotheses, conducting experiments, and analyzing data. It minimizes biases and enables replicable research, leading to groundbreaking discoveries like Einstein's theory of relativity, penicillin, and the structure of DNA.

  7. Scientific Writing Made Easy: A Step‐by‐Step Guide to Undergraduate

    This guide was inspired by Joshua Schimel's Writing Science: How to Write Papers that Get Cited and Proposals that Get Funded—an excellent book about scientific writing for graduate students and professional scientists—but designed to address undergraduate students. While the guide was written by a group of ecologists and evolutionary ...

  8. PDF Writing an Expository Essay

    Section 1 Essay structure An essay is a piece of writing made up of a number of paragraphs. Each paragraph has a specifi c role in an essay. In a fi ve-paragraph essay, the fi rst paragraph is an introduction; the second, third, and fourth paragraphs form the body of the essay; and the fi fth paragraph is a conclusion (see diagram on page 4).

  9. How to Write an Expository Essay

    1. Read Your Essay Prompt. Most expository essay prompts will ask you to do one of the following: Define and explain a concept or theory. Compare and contrast two ideas. Examine a problem and propose a solution. Describe a cause and effect relationship. Explain a step-by-step process.

  10. Expository Writing: Definition and Examples

    The term expository writing refers to any writing that's designed to explain something. We use the word expository to describe any passage of writing that's supposed to present information and help you understand it in an objective way. Some common examples of expository writing include academic essays, textbooks, instructional guides, and ...

  11. How to Write an Expository Essay

    To write an effective expository essay, research needs to be conducted on the topic to find credible sources. Then, the findings should be presented along with their own analysis to explain the research and the connections between the sources. Every essay will have three parts: an introduction, a body, and a conclusion.

  12. Successful Scientific Writing and Publishing: A Step-by-Step Approach

    Abstract. Scientific writing and publication are essential to advancing knowledge and practice in public health, but prospective authors face substantial challenges. Authors can overcome barriers, such as lack of understanding about scientific writing and the publishing process, with training and resources. The objective of this article is to ...

  13. 4.1: Expository Essays

    An essay that explains a writer's ideas by defining, explaining, informing, or elaborating on points to allow the reader to clearly understand the concept. Many of your future academic workplace writing assignments will be expository-explaining your ideas or the significance of a concept or action. An expository essay allows the writer the ...

  14. How to Write an Expository Essay

    These are actually fairly simple essays to write, but they do require some serious research skills. Like most academic essays, the expository essay requires formal writing with an introduction, body, and conclusion. Guide Overview. Tips for writing a kick-butt essay. Focus on the thesis; Listen to the assignment; Pre-write; Explain, don't argue

  15. How to Write an Expository Essay: Types, Tips, and Topics

    The body of your essay can be anywhere from 2-3 paragraphs to several paragraphs long. As you compose your outline, write down the different headings for your paragraphs so you can see exactly how each one transitions into the next. 4. Write your first draft. Start with an introduction, where you include your thesis statement.

  16. Expository Essay in Literature: Definition & Examples

    Examples of Expository Essays. 1. Susan Sontag, "Notes on 'Camp'". This is a definition essay that explores the meaning and usage of the slang word camp. When she wrote the essay in 1964, people used the word to describe a person or thing as exaggerated, effeminate, or theatrical. Sontag suggests that camp isn't a solid concept but ...

  17. How to Write an Expository Essay: Types, Tips, & Examples

    Revise the Document. As the writing stage is over, scan through the final draft of your expository essay to check for formatting errors, grammatical errors, spelling mistakes, etc., and make sure that it complies with all the guidelines of the assignment. Finally, ask a friend or relative to go over the paper to do the last check.

  18. Expository Essays

    Expository Essay Definition. Expository essays are fact-based essays focused on proving their writers' point. A variety of different structures can be used to argue for, and support, that point ...

  19. Essay on Scientific Method

    The scientific method is guidelines/steps which scientists follow to solve a problem. There are several steps in the scientific method depends on the problem at hand. Amongst these steps include 1) observation, 2) hypothesis, 3) research, 4) experiment 5) data analysis 6) conclusion of that question 7) communicate results.

  20. How to write Excellent Expository Essays

    Tip # 2: Research the Topic Thoroughly. Regardless of which type of expository essay your students are working on, they must approach the research stage of the writing process with diligence and focus. The more thorough they are at the research stage, the smoother the remainder of the writing process will be.

  21. Expository Essay On Scientific Method

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