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International Baccalaureate (IB)

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IB students around the globe fear writing the Extended Essay, but it doesn't have to be a source of stress! In this article, I'll get you excited about writing your Extended Essay and provide you with the resources you need to get an A on it.

If you're reading this article, I'm going to assume you're an IB student getting ready to write your Extended Essay. If you're looking at this as a potential future IB student, I recommend reading our introductory IB articles first, including our guide to what the IB program is and our full coverage of the IB curriculum .

IB Extended Essay: Why Should You Trust My Advice?

I myself am a recipient of an IB Diploma, and I happened to receive an A on my IB Extended Essay. Don't believe me? The proof is in the IBO pudding:

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If you're confused by what this report means, EE is short for Extended Essay , and English A1 is the subject that my Extended Essay topic coordinated with. In layman's terms, my IB Diploma was graded in May 2010, I wrote my Extended Essay in the English A1 category, and I received an A grade on it.

What Is the Extended Essay in the IB Diploma Programme?

The IB Extended Essay, or EE , is a mini-thesis you write under the supervision of an IB advisor (an IB teacher at your school), which counts toward your IB Diploma (learn more about the major IB Diploma requirements in our guide) . I will explain exactly how the EE affects your Diploma later in this article.

For the Extended Essay, you will choose a research question as a topic, conduct the research independently, then write an essay on your findings . The essay itself is a long one—although there's a cap of 4,000 words, most successful essays get very close to this limit.

Keep in mind that the IB requires this essay to be a "formal piece of academic writing," meaning you'll have to do outside research and cite additional sources.

The IB Extended Essay must include the following:

  • A title page
  • Contents page
  • Introduction
  • Body of the essay
  • References and bibliography

Additionally, your research topic must fall into one of the six approved DP categories , or IB subject groups, which are as follows:

  • Group 1: Studies in Language and Literature
  • Group 2: Language Acquisition
  • Group 3: Individuals and Societies
  • Group 4: Sciences
  • Group 5: Mathematics
  • Group 6: The Arts

Once you figure out your category and have identified a potential research topic, it's time to pick your advisor, who is normally an IB teacher at your school (though you can also find one online ). This person will help direct your research, and they'll conduct the reflection sessions you'll have to do as part of your Extended Essay.

As of 2018, the IB requires a "reflection process" as part of your EE supervision process. To fulfill this requirement, you have to meet at least three times with your supervisor in what the IB calls "reflection sessions." These meetings are not only mandatory but are also part of the formal assessment of the EE and your research methods.

According to the IB, the purpose of these meetings is to "provide an opportunity for students to reflect on their engagement with the research process." Basically, these meetings give your supervisor the opportunity to offer feedback, push you to think differently, and encourage you to evaluate your research process.

The final reflection session is called the viva voce, and it's a short 10- to 15-minute interview between you and your advisor. This happens at the very end of the EE process, and it's designed to help your advisor write their report, which factors into your EE grade.

Here are the topics covered in your viva voce :

  • A check on plagiarism and malpractice
  • Your reflection on your project's successes and difficulties
  • Your reflection on what you've learned during the EE process

Your completed Extended Essay, along with your supervisor's report, will then be sent to the IB to be graded. We'll cover the assessment criteria in just a moment.

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What Should You Write About in Your IB Extended Essay?

You can technically write about anything, so long as it falls within one of the approved categories listed above.

It's best to choose a topic that matches one of the IB courses , (such as Theatre, Film, Spanish, French, Math, Biology, etc.), which shouldn't be difficult because there are so many class subjects.

Here is a range of sample topics with the attached extended essay:

  • Biology: The Effect of Age and Gender on the Photoreceptor Cells in the Human Retina
  • Chemistry: How Does Reflux Time Affect the Yield and Purity of Ethyl Aminobenzoate (Benzocaine), and How Effective is Recrystallisation as a Purification Technique for This Compound?
  • English: An Exploration of Jane Austen's Use of the Outdoors in Emma
  • Geography: The Effect of Location on the Educational Attainment of Indigenous Secondary Students in Queensland, Australia
  • Math: Alhazen's Billiard Problem
  • Visual Arts: Can Luc Tuymans Be Classified as a Political Painter?

You can see from how varied the topics are that you have a lot of freedom when it comes to picking a topic . So how do you pick when the options are limitless?

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How to Write a Stellar IB Extended Essay: 6 Essential Tips

Below are six key tips to keep in mind as you work on your Extended Essay for the IB DP. Follow these and you're sure to get an A!

#1: Write About Something You Enjoy

You can't expect to write a compelling essay if you're not a fan of the topic on which you're writing. For example, I just love British theatre and ended up writing my Extended Essay on a revolution in post-WWII British theatre. (Yes, I'm definitely a #TheatreNerd.)

I really encourage anyone who pursues an IB Diploma to take the Extended Essay seriously. I was fortunate enough to receive a full-tuition merit scholarship to USC's School of Dramatic Arts program. In my interview for the scholarship, I spoke passionately about my Extended Essay; thus, I genuinely think my Extended Essay helped me get my scholarship.

But how do you find a topic you're passionate about? Start by thinking about which classes you enjoy the most and why . Do you like math classes because you like to solve problems? Or do you enjoy English because you like to analyze literary texts?

Keep in mind that there's no right or wrong answer when it comes to choosing your Extended Essay topic. You're not more likely to get high marks because you're writing about science, just like you're not doomed to failure because you've chosen to tackle the social sciences. The quality of what you produce—not the field you choose to research within—will determine your grade.

Once you've figured out your category, you should brainstorm more specific topics by putting pen to paper . What was your favorite chapter you learned in that class? Was it astrophysics or mechanics? What did you like about that specific chapter? Is there something you want to learn more about? I recommend spending a few hours on this type of brainstorming.

One last note: if you're truly stumped on what to research, pick a topic that will help you in your future major or career . That way you can use your Extended Essay as a talking point in your college essays (and it will prepare you for your studies to come too!).

#2: Select a Topic That Is Neither Too Broad nor Too Narrow

There's a fine line between broad and narrow. You need to write about something specific, but not so specific that you can't write 4,000 words on it.

You can't write about WWII because that would be a book's worth of material. You also don't want to write about what type of soup prisoners of war received behind enemy lines, because you probably won’t be able to come up with 4,000 words of material about it. However, you could possibly write about how the conditions in German POW camps—and the rations provided—were directly affected by the Nazis' successes and failures on the front, including the use of captured factories and prison labor in Eastern Europe to increase production. WWII military history might be a little overdone, but you get my point.

If you're really stuck trying to pinpoint a not-too-broad-or-too-narrow topic, I suggest trying to brainstorm a topic that uses a comparison. Once you begin looking through the list of sample essays below, you'll notice that many use comparisons to formulate their main arguments.

I also used a comparison in my EE, contrasting Harold Pinter's Party Time with John Osborne's Look Back in Anger in order to show a transition in British theatre. Topics with comparisons of two to three plays, books, and so on tend to be the sweet spot. You can analyze each item and then compare them with one another after doing some in-depth analysis of each individually. The ways these items compare and contrast will end up forming the thesis of your essay!

When choosing a comparative topic, the key is that the comparison should be significant. I compared two plays to illustrate the transition in British theatre, but you could compare the ways different regional dialects affect people's job prospects or how different temperatures may or may not affect the mating patterns of lightning bugs. The point here is that comparisons not only help you limit your topic, but they also help you build your argument.

Comparisons are not the only way to get a grade-A EE, though. If after brainstorming, you pick a non-comparison-based topic and are still unsure whether your topic is too broad or narrow, spend about 30 minutes doing some basic research and see how much material is out there.

If there are more than 1,000 books, articles, or documentaries out there on that exact topic, it may be too broad. But if there are only two books that have any connection to your topic, it may be too narrow. If you're still unsure, ask your advisor—it's what they're there for! Speaking of advisors...

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Don't get stuck with a narrow topic!

#3: Choose an Advisor Who Is Familiar With Your Topic

If you're not certain of who you would like to be your advisor, create a list of your top three choices. Next, write down the pros and cons of each possibility (I know this sounds tedious, but it really helps!).

For example, Mr. Green is my favorite teacher and we get along really well, but he teaches English. For my EE, I want to conduct an experiment that compares the efficiency of American electric cars with foreign electric cars.

I had Ms. White a year ago. She teaches physics and enjoyed having me in her class. Unlike Mr. Green, Ms. White could help me design my experiment.

Based on my topic and what I need from my advisor, Ms. White would be a better fit for me than would Mr. Green (even though I like him a lot).

The moral of my story is this: do not just ask your favorite teacher to be your advisor . They might be a hindrance to you if they teach another subject. For example, I would not recommend asking your biology teacher to guide you in writing an English literature-based EE.

There can, of course, be exceptions to this rule. If you have a teacher who's passionate and knowledgeable about your topic (as my English teacher was about my theatre topic), you could ask that instructor. Consider all your options before you do this. There was no theatre teacher at my high school, so I couldn't find a theatre-specific advisor, but I chose the next best thing.

Before you approach a teacher to serve as your advisor, check with your high school to see what requirements they have for this process. Some IB high schools require your IB Extended Essay advisor to sign an Agreement Form , for instance.

Make sure that you ask your IB coordinator whether there is any required paperwork to fill out. If your school needs a specific form signed, bring it with you when you ask your teacher to be your EE advisor.

#4: Pick an Advisor Who Will Push You to Be Your Best

Some teachers might just take on students because they have to and aren't very passionate about reading drafts, only giving you minimal feedback. Choose a teacher who will take the time to read several drafts of your essay and give you extensive notes. I would not have gotten my A without being pushed to make my Extended Essay draft better.

Ask a teacher that you have experience with through class or an extracurricular activity. Do not ask a teacher that you have absolutely no connection to. If a teacher already knows you, that means they already know your strengths and weaknesses, so they know what to look for, where you need to improve, and how to encourage your best work.

Also, don't forget that your supervisor's assessment is part of your overall EE score . If you're meeting with someone who pushes you to do better—and you actually take their advice—they'll have more impressive things to say about you than a supervisor who doesn't know you well and isn't heavily involved in your research process.

Be aware that the IB only allows advisors to make suggestions and give constructive criticism. Your teacher cannot actually help you write your EE. The IB recommends that the supervisor spends approximately two to three hours in total with the candidate discussing the EE.

#5: Make Sure Your Essay Has a Clear Structure and Flow

The IB likes structure. Your EE needs a clear introduction (which should be one to two double-spaced pages), research question/focus (i.e., what you're investigating), a body, and a conclusion (about one double-spaced page). An essay with unclear organization will be graded poorly.

The body of your EE should make up the bulk of the essay. It should be about eight to 18 pages long (again, depending on your topic). Your body can be split into multiple parts. For example, if you were doing a comparison, you might have one third of your body as Novel A Analysis, another third as Novel B Analysis, and the final third as your comparison of Novels A and B.

If you're conducting an experiment or analyzing data, such as in this EE , your EE body should have a clear structure that aligns with the scientific method ; you should state the research question, discuss your method, present the data, analyze the data, explain any uncertainties, and draw a conclusion and/or evaluate the success of the experiment.

#6: Start Writing Sooner Rather Than Later!

You will not be able to crank out a 4,000-word essay in just a week and get an A on it. You'll be reading many, many articles (and, depending on your topic, possibly books and plays as well!). As such, it's imperative that you start your research as soon as possible.

Each school has a slightly different deadline for the Extended Essay. Some schools want them as soon as November of your senior year; others will take them as late as February. Your school will tell you what your deadline is. If they haven't mentioned it by February of your junior year, ask your IB coordinator about it.

Some high schools will provide you with a timeline of when you need to come up with a topic, when you need to meet with your advisor, and when certain drafts are due. Not all schools do this. Ask your IB coordinator if you are unsure whether you are on a specific timeline.

Below is my recommended EE timeline. While it's earlier than most schools, it'll save you a ton of heartache (trust me, I remember how hard this process was!):

  • January/February of Junior Year: Come up with your final research topic (or at least your top three options).
  • February of Junior Year: Approach a teacher about being your EE advisor. If they decline, keep asking others until you find one. See my notes above on how to pick an EE advisor.
  • April/May of Junior Year: Submit an outline of your EE and a bibliography of potential research sources (I recommend at least seven to 10) to your EE advisor. Meet with your EE advisor to discuss your outline.
  • Summer Between Junior and Senior Year: Complete your first full draft over the summer between your junior and senior year. I know, I know—no one wants to work during the summer, but trust me—this will save you so much stress come fall when you are busy with college applications and other internal assessments for your IB classes. You will want to have this first full draft done because you will want to complete a couple of draft cycles as you likely won't be able to get everything you want to say into 4,000 articulate words on the first attempt. Try to get this first draft into the best possible shape so you don't have to work on too many revisions during the school year on top of your homework, college applications, and extracurriculars.
  • August/September of Senior Year: Turn in your first draft of your EE to your advisor and receive feedback. Work on incorporating their feedback into your essay. If they have a lot of suggestions for improvement, ask if they will read one more draft before the final draft.
  • September/October of Senior Year: Submit the second draft of your EE to your advisor (if necessary) and look at their feedback. Work on creating the best possible final draft.
  • November-February of Senior Year: Schedule your viva voce. Submit two copies of your final draft to your school to be sent off to the IB. You likely will not get your grade until after you graduate.

Remember that in the middle of these milestones, you'll need to schedule two other reflection sessions with your advisor . (Your teachers will actually take notes on these sessions on a form like this one , which then gets submitted to the IB.)

I recommend doing them when you get feedback on your drafts, but these meetings will ultimately be up to your supervisor. Just don't forget to do them!

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The early bird DOES get the worm!

How Is the IB Extended Essay Graded?

Extended Essays are graded by examiners appointed by the IB on a scale of 0 to 34 . You'll be graded on five criteria, each with its own set of points. You can learn more about how EE scoring works by reading the IB guide to extended essays .

  • Criterion A: Focus and Method (6 points maximum)
  • Criterion B: Knowledge and Understanding (6 points maximum)
  • Criterion C: Critical Thinking (12 points maximum)
  • Criterion D: Presentation (4 points maximum)
  • Criterion E: Engagement (6 points maximum)

How well you do on each of these criteria will determine the final letter grade you get for your EE. You must earn at least a D to be eligible to receive your IB Diploma.

Although each criterion has a point value, the IB explicitly states that graders are not converting point totals into grades; instead, they're using qualitative grade descriptors to determine the final grade of your Extended Essay . Grade descriptors are on pages 102-103 of this document .

Here's a rough estimate of how these different point values translate to letter grades based on previous scoring methods for the EE. This is just an estimate —you should read and understand the grade descriptors so you know exactly what the scorers are looking for.

Here is the breakdown of EE scores (from the May 2021 bulletin):

How Does the Extended Essay Grade Affect Your IB Diploma?

The Extended Essay grade is combined with your TOK (Theory of Knowledge) grade to determine how many points you get toward your IB Diploma.

To learn about Theory of Knowledge or how many points you need to receive an IB Diploma, read our complete guide to the IB program and our guide to the IB Diploma requirements .

This diagram shows how the two scores are combined to determine how many points you receive for your IB diploma (3 being the most, 0 being the least). In order to get your IB Diploma, you have to earn 24 points across both categories (the TOK and EE). The highest score anyone can earn is 45 points.

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Let's say you get an A on your EE and a B on TOK. You will get 3 points toward your Diploma. As of 2014, a student who scores an E on either the extended essay or TOK essay will not be eligible to receive an IB Diploma .

Prior to the class of 2010, a Diploma candidate could receive a failing grade in either the Extended Essay or Theory of Knowledge and still be awarded a Diploma, but this is no longer true.

Figuring out how you're assessed can be a little tricky. Luckily, the IB breaks everything down here in this document . (The assessment information begins on page 219.)

40+ Sample Extended Essays for the IB Diploma Programme

In case you want a little more guidance on how to get an A on your EE, here are over 40 excellent (grade A) sample extended essays for your reading pleasure. Essays are grouped by IB subject.

  • Business Management 1
  • Chemistry 1
  • Chemistry 2
  • Chemistry 3
  • Chemistry 4
  • Chemistry 5
  • Chemistry 6
  • Chemistry 7
  • Computer Science 1
  • Economics 1
  • Design Technology 1
  • Design Technology 2
  • Environmental Systems and Societies 1
  • Geography 1
  • Geography 2
  • Geography 3
  • Geography 4
  • Geography 5
  • Geography 6
  • Literature and Performance 1
  • Mathematics 1
  • Mathematics 2
  • Mathematics 3
  • Mathematics 4
  • Mathematics 5
  • Philosophy 1
  • Philosophy 2
  • Philosophy 3
  • Philosophy 4
  • Philosophy 5
  • Psychology 1
  • Psychology 2
  • Psychology 3
  • Psychology 4
  • Psychology 5
  • Social and Cultural Anthropology 1
  • Social and Cultural Anthropology 2
  • Social and Cultural Anthropology 3
  • Sports, Exercise and Health Science 1
  • Sports, Exercise and Health Science 2
  • Visual Arts 1
  • Visual Arts 2
  • Visual Arts 3
  • Visual Arts 4
  • Visual Arts 5
  • World Religion 1
  • World Religion 2
  • World Religion 3

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Biology Extended Essay: The Complete Guide for IB Students

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by  Antony W

March 13, 2023

biology extended essay

Biology Extended Essay is an assignment that requires you to explore biological issue relevant to you and your environment.

Your focus should be on a particular biological emphasis within a broader context of scientific investigation. Given that the focus is on a biological system, you’ll have to make an analytical argument as you write the essay.

In this guide, you’ll learn exactly what you need to know about the IB Biology Extended Essay . Our goal with this lesson is to give you the most important information about the subject so that you can get the assignment done right.

What is Biology in an IB Extended Essay?

Biology in IB Extended Essay is the examination of living organisms and their life processes. The assignment integrates biological theories and examines the nature of the subject.

While you can approach a Biology EE from varying viewpoints, the treatment of the material used in your investigation must be 100% biological.

IB Biology Extended Essay Topics

The topic you choose to explore in your IB Biology Extended Essay shouldn’t be too broad or too narrow. Make sure you choose a focused topic that’s easy to investigate and easy to explain.

Your teacher expects you to explain how you arrived at your research question, and the best way to do that is to outline the aspects you wish to consider in the essay.

You may also have to formulate one or more hypothesis based on the research question.

The EE guide on the subject recommends that you choose your topics carefully, making sure you refrain from inappropriate topics such as those that are likely to inflict pain, involve the use of dangerous substances, or linked to safety concern.

You should avoid topics whose outcome are either obvious or already well known and documented in textbooks.

Doing Research for Your IB Biology Extended Essay

You will need to do primary and secondary research for your Biology Extended Essay.

1. Primary Research

For primary research, you can collect data from fieldwork, surveys, biological drawings, and biological observations.

If you’ve picked topic that requires practical work, you may have to conduct multiple, extensive fieldwork or do lab tests. In such a case, you will have to provide a detailed explanation of the experimental research procedures sued.

2. Secondary Research

When it comes to secondary research, you get data or information from literature.

Some students restate the information they collect from secondary sources, but doing so often adds little or no value to a Biology Extended Essay.

Therefore, the right approach is to analyze the data or information in an original way to add a new dimension and value to your research and to the essay at large.

Whether you do primary research, secondary research, or a combination of both, you need to make sure you have access to enough data or information to answer your research question.

How Do You Write an IB Biology Extended Essay?

The first step to writing a comprehensive, 4,000-word essay in Biology EE is to use the right scientific techniques to analyze the data you collect during research.

You then have to present your argument or evaluation based on the analysis you’ve completed.

You can include graphs, tables, and diagrams, and make sure you point out their significance in the essay so they’re easy to understand.

As with any other EE, your Biology essay should have a good structure and demonstrate a logical progression. Feel free to use headings and subheadings in the essay because it imposes a concise structure.

Your evaluation of the research questions should demonstrate that you not only understand the results from your experiments but also can explain their significance in a wider academic context.

Since you aren’t sure about what to expect from biological experiments, you may have to account for anomalies or unexpected results in your investigation.

In such a case, you have to provide explanations for the expected outcome and give an alternative explanation for such findings.

The subject also allows you to propose slight or major changes to the hypothesis presented in the essay, in which case you will have to suggest relevant approaches to testing the new changes.

Evaluation of Your Biology EE

Writing your EE in Biology also requires that you undertake a critical evaluation of the work that you have already done.

The evaluation helps you to identify and explain the limitation of your research by a number of factors including the reliability and validity of statistics, the precision of experimenting equipment and the reliability of sources.

You also need to consider biological limitations of your research. Such limitations are likely to arise from the inability to generalize based on a single form of an organism or problems of control and repeatability when using living organisms in your research.

Biology Internal Assessment vs Biology Extended Essay

It’s important to keep in mind that a Biology Extended Essay is not an extension of the Internal Assessment in the same subject. There are a few differences that set the two assignments apart, and it’s important to know them before you start working on the essay.

Get Extended Essay Writing Help

Do you need help with your Extended Essay in Biology? Our team of IB experts is here to help you write the 4,000-word essay, even if it’s on a complex topic. You can click here to learn more.

About the author 

Antony W is a professional writer and coach at Help for Assessment. He spends countless hours every day researching and writing great content filled with expert advice on how to write engaging essays, research papers, and assignments.

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IB Extended Essay: Assessment Criteria

  • Research Questions
  • Past Essays
  • Notes & Outlines
  • Works Cited Page
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biology extended essay requirements

Score Descriptors for each Criterion:

  • A - Focus and Method
  • B - Knowledge and Understanding
  • C - Critical Thinking
  • D - Presentation
  • E - Engagement

Printable: Full Rubric  for all subjects

To view details for your SUBJECT, open the correct page below.

  • Choose "Interpreting the EE Assessment Criteria" on the sidebar to see how to score well in YOUR subject area

biology extended essay requirements

Language & literature (language A)

Language acquisition (language B)

Mathematics

Visual Arts

World Studies

Business Management

Grade Boundaries

biology extended essay requirements

What's Expected?

  • A: Focus/Method
  • B: Knowledge
  • C: Critical Thinking
  • D: Presentation
  • E: Engagement
  • A: Focus and Method (6 marks)
  • B: Knowledge and Understanding (6 marks)
  • C: Critical Thinking (12 marks)
  • D: Presentation (4 marks)
  • E: Engagement (6 marks)
  • Total marks possible: 34 (see grade boundaries below)
  • Printable:  Full Rubric
  • Printable: A3 size with details
  • Printable:  Details for each criterion , via the Oxford guide

biology extended essay requirements

Criterion A:  Focus and Method (6 points)

What It Means:   This criterion focuses on the topic, the research question and the methodology. It assesses the explanation of the focus of the research (this includes the topic and the research question), how the research will be undertaken, and how the focus is maintained throughout the essay.

Questions to ask:  

  • Does this essay meet the requirements for the subject for which you are registering it?
  • Is your research question stated as a question?
  • Have you explained how your research question relates to the subject that you selected for the extended essay?
  • Have you given an insight into why your area of study is important?
  • Is your research question feasible within the scope of the task? Could your research question be “answered” or it is too vague?
  • Did you refer to your research question throughout the essay (not only in the introduction and conclusion)?
  • Did you explain why you selected your methodology?
  • Are there other possible methods that could be used or applied to answer your research question? How might this change the direction of your research?
  • If you stated a particular methodology in the introduction of your essay, or specific sources, have you used them?
  • Are there any references listed in the bibliography that were not directly cited in the text?

(Source: Susan Trower, via West Sound Academy)

biology extended essay requirements

Criterion B:  Knowledge and Understanding (6 points)

What It Means:   This criterion assesses the extent to which the research relates to the subject area/discipline used to explore the research question; or in the case of the world studies extended essay, the issue addressed and the two disciplinary perspectives applied; and additionally, the way in which this knowledge and understanding is demonstrated through the use of appropriate terminology and concepts.

  • Have you explained how your research question relates to a specific subject you selected for the extended essay?
  • Have you used relevant terminology and concepts throughout your essay as they relate to your particular area of research?
  • Is it clear that the sources you are using are relevant and appropriate to your research question?
  • Do you have a range of sources, or have you only relied on one particular type, for example internet sources?
  • Is there a reason why you might not have a range? Is this justified?

biology extended essay requirements

(Source: Oxford EE manual, p. 110)

biology extended essay requirements

Criterion C:  Critical Thinking (12 points)

What It Means:   This criterion assesses the extent to which critical thinking skills have been used to analyze and evaluate the research undertaken.

  • Have you made links between your results and data collected and your research question?
  • If you included data or information that is not directly related to your research question have you explained its importance?
  • Are your conclusions supported by your data?
  • If you found unexpected information or data have you discussed its importance?
  • Have you provided a critical evaluation of the methods you selected?
  • Have you considered the reliability of your sources (peer-reviewed journals, internet, and so on)?
  • Have you mentioned and evaluated the significance of possible errors that may have occurred in your research?
  • Are all your suggestions of errors or improvements relevant?
  • Have you evaluated your research question?
  • Have you compared your results or findings with any other sources?
  • Is there an argument that is clear and easy to follow and directly linked to answering your research question, and which is supported by evidence? Are there other possible methods that could be used or applied to answer your research question? How might this change the direction of your research?

biology extended essay requirements

(Source: Oxford EE Manual p. 111)

Handy Links:

  • Presentation One Pager  via Catalina Bordoy
  • Presentation Checklist
  • Sample Title page   (see below - top half of the page)

biology extended essay requirements

Criterion D:  Presentation ( 4 points)

What It Means:   This criterion assesses the extent to which the presentation follows the standard format expected for academic writing and the extent to which this aids effective communication.

  • Have you read and understood the presentation requirements of the extended essay?
  • Have you chosen a font that will be easy for examiners to read on-screen?
  • Is your essay double-spaced and size 12 font?
  • Are the title and research question mentioned on the cover page?
  • Are all pages numbered?
  • Have you prepared a correct table of contents?
  • Do the page numbers in the table of contents match the page numbers in the text?
  • Is your essay subdivided into correct sub-sections, if this is applicable to the subject?
  • Are all figures and tables properly numbered and labelled?
  • Does your bibliography contain only the sources cited in the text?
  • Did you use the same reference system throughout the essay?
  • Does the essay have less than 4,000 words?
  • Is all the material presented in the appendices relevant and necessary?
  • Have you proofread the text for spelling or grammar errors?

Criterion E: Engagement

  • Three reflections (best after meeting with your supervisor)
  • 500 words TOTAL (100 + 150 + 250?)
  • Reflections are done in Managebac on your Reflection space
  • See the "Reflections" tab above for prompts to write about

biology extended essay requirements

(Source: Oxford EE Manual p.135)

biology extended essay requirements

(Source: Oxford EE Manual p.133)

  • Sample Reflections
  • Full chapter on Reflections from the Oxford Guide

Criterion E:  Engagement (6 points)

What It Means:   This criterion assesses the student’s engagement with their research focus and the research process. It will be applied by the examiner at the end of the assessment of the essay, after considering the student’s RPPF (Reflections on planning and progress form).

  • Have you demonstrated your engagement with your research topic and the research process?
  • Have you highlighted challenges you faced and how you overcame them?
  • Will the examiner get a sense of your intellectual and skills development?
  • Will the examiner get a sense of your creativity and intellectual initiative?
  • For prompts to deepen your reflections, go  here  and then to the bottom of the page
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​Researching and writing an IB Extended Essay in Biology

biology extended essay requirements

Mr James Fraser, Head of Science at  Scarborough College , shares some of the Extended Essay topics that he's had the pleasure of supervising.

The Extended Essay is a compulsory component of the IB Diploma. Students are tasked with writing four thousand words on a topic of their choice relating to one of the subjects they are studying for their Diploma. Every student is allocated a supervisor who will guide them through the process. It is not an exaggeration when I say that supervising students completing their Extended Essay in my subject has been the most rewarding part of my teaching role at the College.

I have had the privilege of supervising more than thirty students since the IB was introduced at the College more than ten years ago. When I cast my mind back, some topics and essays immediately spring to mind. For instance, the research undertaken by a student to investigate the response made by the tiny C. elegans worm to being tapped on the head. After we had acquired the worms from the University of Chicago, the student designed an ingenious device to tap the head of the worms using her own eyelash. I am sure the experience of conducting research for her Extended Essay in the College laboratory was an instrumental reason for her choosing to read for an immunology degree at the University of Glasgow before doing a PhD at Melbourne University.

More recently, a student now studying medicine at university, designed an investigation to genetically modify bacteria cultured in the lab with a gene originally obtained from jellyfish. The gene taken up by the transgenic bacteria caused them to fluoresce when exposed to ultraviolet light. The gene was prepared in a number of different ways to see if this had an effect on its uptake by the bacteria.

biology extended essay requirements

Our current Upper Sixth students have recently submitted their Extended Essays. A variety of topics were chosen for investigation by biologists this time around including the effect of hair washing on the strength of hair and the frequency of visits to a bird feeder by House sparrows during the day.

Another essay written by Ksenia Ivanova focussed on the potential for the effect of an antibiotic to be enhanced when used in conjunction with a variety of different plant extracts. I asked Ksenia what advice she would give a student choosing a topic for their essay. She replied that 'Whichever topic you decide to explore, the key is to choose something that you really like and care about, so that your work would never be boring.'

The essays themselves are awarded a grade from A to E. Together with the grade for the Theory of Knowledge course, upto three additional IB Diploma points can be included in their overall IB Diploma score. However, the emphasis throughout the process is not solely on the outcome. Many former students have been in touch over the years to tell me how much their Extended Essay experience helped them when completing assignments and dissertations at university. They always comment on the head start they had over their peers who had studied for ‘A’ Levels who had no experience of academic writing at school.

Returning to my current students, they have discovered that the frequency of hair washing does NOT have an effect on its strength, House sparrows visit garden feeders more in the morning and early evening than at other times of day, and are much more likely to be male than female, and the growth of bacteria was inhibited more when an antibiotic was used together with either clove oil or clary sage extracts than when it was used on its own.

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Extended Essay: Sciences: Biology

  • Step 1 - Choosing a Subject
  • Step 2 - Choosing a Topic
  • Step 3 - Draft a Research Question
  • Step 4 - Finding Sources
  • Step 5 - Evaluating Information
  • Step 6 - Bibliography & Citation
  • Step 7 - Organizing Information
  • The Arts: Visual Arts
  • Individuals & Societies: Business Management
  • Individuals & Societies: History
  • Individuals & Societies: Psychology
  • Language Acquisition
  • Language and Literature
  • Sciences: Biology
  • Sciences: Sports, Exercise, and Health Sciences
  • Interdisciplinary Papers: World Studies
  • Assessment Criteria
  • Research Questions
  • Investigation

Extended Essay in Biology

Extended Essays in Biology

Choosing a topic

Choosing a Topic

Biology is the science that deals with living organisms and life processes. A biology EE should incorporate biological theory and emphasize why it is relevant today.

The topic must relates specifically to biology. Many topics can be approached from different viewpoints, but for an EE in biology the treatment of the topic must be clearly biological. For example, an EE in an interdisciplinary area such as biochemistry will, if registered under the subject of biology, be judged solely on its biological content.

Disease, for example, could be considered through many different lenses. A biology paper about diseases would focus on their impact on particular organisms or life processes, and not on medical treatment, or the economic effects of the disease on society.

Approaches to research

Primary Research

Essays in biology may be based on data collected by the student through:

Essays that involve lab work, or fieldwork, should include a clear and concise description of the experimental procedure. Students taking an experimental approach must also consult secondary sources.

Secondary Research

Students can base their essays on data or information obtained from literature (secondary studies). However, in this case they should use the data in an original way. Essays that simply restate facts or data taken directly from the sources are of little value.

Biology Sources

Even students doing primary research will still need to reference secondary sources. And students relying entirely on secondary sources will need to find sources not only of written information but also experimental data which they can analyze.

Writing the Essay

biology extended essay requirements

An essay in the sciences requires is more than just generating and presenting data. Analysis of the data is also essential. The main body of the essay should consist of an argument or evaluation based on the data or information presented . You can gather your own data through a variety of methods, or rely on secondary data. You should use graphs, tables, or diagrams to point out the significance of your findings.

You should ensure that the main body of the essay is well structured and has an obvious logical progression. You can use numbered and headed paragraphs to impose a clear structure. Your evaluation should show that you understand the the data they have collected and its significance to the world.

In your analysis, you should also describe and explain the limitations imposed on the research by factors such as

  • the suitability and reliability of the sources accessed
  • accuracy and precision of measuring equipment
  • sample size
  • validity and reliability of statistics

Students  should also consider biological limitations such as:

  • those arising from the problem of repeatability and control when using living material
  • the difficulties of generalizing from research based on a single type of organism or environment.

Exceptions for Safety and Academic Honesty

biology extended essay requirements

Safety and Ethics in Choosing a Topic

In all cases where human subjects are used as the basis for an investigation, clear evidence of informed consent must be provided in accordance with the IB guidelines.

Some topics may be inadmissible because their means of investigation are unethical. For example, investigations that:

  • are based on experiments likely to inflict pain on, or cause stress to, living organisms
  • are likely to have a harmful effect on health, eg culturing micro-organisms at or near body temperature (37°C)
  • involve access to, or publication of, confidential medical information.

Some topics may be unsuitable because of safety issues. Adequate safety apparatus and qualified supervision is required for experiments involving dangerous substances such as:

  • toxic or dangerous chemicals
  • carcinogenic substances
  • radioactive materials.

Other topics may be unsuitable because the outcome is already well known and documented in standard textbooks.

Assessed Student Work

  • The Antimicrobial Effects of Metals Copper, Barium and Silver on the Growth of Bacteria
  • Effects of different calcium salts in growth solutions on the growth of the stems of basil (Ocimum basilicum) plants grown hydroponically
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IB Biology EE examples

Filter exemplars, how do different concentrations of punica granatum extracts: peel, flower and leaves (10, 20, 30, 40 and 50 mg/ml) affect the rate of reaction of α-amylase and compare with metformin (anti-diabetic drug) as measured by a spectrophotometer at 587nm, to what extent do extracts of allium sativum (garlic) and zingiber officinale (ginger) reduce antimicrobial activity and how effective it is compared to antibiotics, want to get full marks for your ee allow us to review it for you 🎯, to what extent is blood pressure related to the development of alzheimer’s disease in people in age above 50, to what extent do different concentrations of magnesium nitrate (10, 20, 30, 40, 50 mm) affect the concentration of chlorophyll a and b in ocimum basilicum at 645 nm and 662 nm wavelength using spectrophotometer, to what extent does varying the duration (0 mins, 5 mins, 10 mins, 15 mins, 20 mins, 25 mins) at which a 25% solution consisting of ethanol-dissolved ayurvedic spices (curcumin and black cumin) is maintained at 60°c affect the antimicrobial activity of these spices against a k12 strain of escherichia coli, fast track your coursework with mark schemes moderated by ib examiners. upgrade now 🚀, what is the effect of seawater mixture (0%, 5%, 10%) on the germination of black chickpeas (cicer arietinum), green gram (vigna radiata) and fenugreek (trigonella foenum-graecum) for 5 days and their subsequent growth when watered using tap water for 10 days where growth was measured by plant height (±0.05 cm) and dry mass (±0.001 g), to what extent does the presence of acetaminophen (tylenol), polymixin b (polysporin), and diphenhydramine hydrochloride (benadryl) in the growth medium of cotoneaster acutifolius affect the average change in leaf length over a period of 15 days in five different concentrations, how does juice from garlic allium sativum cloves prepared in different ways (fresh raw, crushed one day prior, cooked, kept in oil, fermented in brine and fermented (black garlic)) affect the growth of a non-pathogenic strain of escherichia coli, to what extent do phytochemicals such as resveratrol, glyceollin and epigallocatechin-3-gallate (egcg) possess comparable antibacterial effects against staphylococcus aureus bacteria to a non-prescription otitis externa (oe) treatments such as ciprofloxacin using bacillus subtilis as a prokaryotic model organism, to what extent does inhaling e-cigarettes affect the lungs’ vital capacity of high school students in jakarta, to what extent do different species of chili pepper consumption biologically affect the rate of lipid digestion in terms of ph change within 30 minutes, how is the number of errors made by participants when attempting to distinguish between the temperature of two different water baths influenced by the hours slept within a 24-hour period, to what extent do bioinformatic tools such as cb dock 2 and chimera help in the analysis of phytochemicals (calotropone, quercetin, thymoquinone) compared to allopathic drugs (gemcitabine, olaparib, fluorouracil) against target receptors of pancreatic cancer (human glutamate oxaloacetate transaminase 1 (got1), threonine-protein kinase bub1, and peroxisome proliferator-activated receptor gamma), what is the effect of salinity stress (0, 50, 100, 150, 200 mm nacl) measured through microscopic (stomatal aperture) and morphological (leaf area, leaf dry mass, and root length) characteristics on pre-treated radish (raphanus sativus) seeds with magnetopriming (48 hours), how effective is the cone repair technique when treating ebstein’s anomaly in comparison to other treatments, to what extent does performing the dance styles, cha cha, viennese waltz, and modern contemporary affect human fitness levels as measured by oxygen consumption (vo2) and maximum heart rate (bpm), knowing that fingerprints are always different, but the core is identical, to what extent is it possible to see other similarities between the minutiae of close family members, to what extent does irrigation with carbonated water affect the ferric ion (fe3+) nutrient content of brassica oleracea ‘black tuscany’ microgreens, ¿cómo se estudia el angioedema hereditario, su diagnóstico, tratamiento, síntomas y etiología en humanos, to what extent do various concentrations of piper betle extract (1%, 2%, 3%, 4%, 5%) affect the enzymatic activity of the digestive enzyme amylase, protease and lipase on their substrates (starch, casein and milk) in the the process of digestion and the estimation of vitamin c concentration in piper betle, estudio sobre el efecto de la crema dental utilizada para el cepillado de los dientes como inhibidor en la actividad enzimática de la alfa amilasa salival, how can the frameshift mutation caused by a deletion that affects the human body's melanocortin receptor gene (mcr) and leptin receptor gene (lepr) induce monogenetic obesity, to what extent does high intensity interval training (hiit) effect the maximum oxygen uptake (vo2max) in sedentary populations, investigating the effects of oil spillages on plants, what effect do differing concentrations of the growth hormone gibberellic acid, have on the growth and mortality rates of pulses, common beans (phaseolus vulgaris l.) and common peas (pisum sativum l. (partim)), how do different concentrations of two cytokinin hormones: kinetin (0.5, 1 and 1.5 mg/l) and 6-benzylaminopurine (1.5, 2 and 2.5 mg / l) affect the growth of lactuca sativa, measured by height, number of leaves and dry mass, separately and combined over 5 weeks, to what extent is frequent consumption of ultra processed food related to prevalence of overweight and obesity among high school and college students, in poland and in thailand, ¿cómo los cambios en la luminosidad con niveles de 0, 2 500 y 5 000 lux, en focos de 25 y 50 watts respectivamente, afectan a la fijación de dióxido de carbono (co2) en la sansevieria trifasciata zeylanica biología nm, how does the pollution of oestrogens into freshwater systems affect the biological processes of fathead minnows, to what extent does the abundance of hormosira banksii influence biodiversity at different positions on the intertidal rocky shore, how does the duration of exposure time to ultraviolet light affect the growth of saccharomyces cerevisiae, to what extent does the efficiency of lactase enzyme found in different types and brands of dietary supplements (vitaplus innolact lactase dietary supplement film-coated tablet, millandjoy lactase enzyme chewable tablets, lactase comfort drops, dr. chen soft capsule, sanct bernhard lactase enzyme capsule) differ if the prescribed dosage used, measured as the amount of glucose produced after being treated with different supplements in a given time period (30sec, 60sec, 90sec, 120sec, 150sec), how do different concentrations of salicylic acid (1mm and 1m) affect growth of radishes (raphanus sativus), under drought, osmotic and cold stress, as well as normal conditions, the impact of ph on chlorella vulgaris, “is the cone repair a suitable approach for severe forms of ebstein anomaly”, the impact of ph on chlorella vulgaris, to what extent do the antibacterial properties of metals copper, barium and silver aid in the inhibition of the growth of bacteria staphylocollucus albus, between hiit and steady-state cardio, which is more impactful on physical performance, the digestion rate of oatmeal after different pre-soaking treatments and its correlation to glycemic index.

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Extended Essay (IB): Choosing a subject and topic

  • The Inquiry Process
  • EE Seminar 1
  • EE Seminar 2
  • IT Workshop 1
  • EE Investigation Days
  • EE Writing Days
  • Choosing a subject and topic
  • Developing a line of inquiry
  • Finding and selecting sources
  • Working with ideas
  • Expressing your ideas
  • Using ManageBac
  • Supervisor resources
  • Who can help?

biology extended essay requirements

For your EE you have the freedom to focus on almost any topic and you will write your own question to answer.  However, your topic must fit into a single DP subject (unless you choose to write an interdisciplinary essay, such as a World Studies EE that covers a topic “of contemporary global significance” and is likely to encompass two subject areas).

Given the academic challenge and level expected of an EE, you are strongly advised to choose a subject that you are currently studying, preferably at Higher Level.

Introduction to the Extended Essay

biology extended essay requirements

What is the Extended Essay?

  • Compulsory element of the core, along with TOK and CAS
  • Inquiry-based research project resulting in an essay of up to 4,000 words
  • Topic of your choice, but must be based in a DP subject * and meet subject-specific requirements
  • You are strongly encouraged to do your essay in one of your HL subjects

*It is possible, under certain circumstances, to combine two subjects and do a World Studies essay but we do not currently recommend this.

What do I need to do?

biology extended essay requirements

This guide is just to get your thinking started.

You are going to be spending nine months on your Extended Essay - it is very important to choose a topic that actually interests you, or it is going to be a very long nine months...

Good preparation is much more effective for finding inspiration than last minute panic!

CALVIN AND HOBBES © Watterson. Reprinted with permission of ANDREWS MCMEEL SYNDICATION.  All rights reserved.

How do I choose a subject?

Thought bubble image

  • Think about your interests outside the classroom then check whether they might fit into any IB subject areas.
  • Think about your IB subjects, particularly your HL subjects. Which would (and wouldn't) you enjoy exploring in more depth?
  • Make a list of the topics (for one or more different subject areas) that you have enjoyed in that subject area and a list of topics you haven’t covered but wish you had. You might want to chat to your teachers or have a look in your textbooks.
  • Think about any career aspirations you might have, or any ideas for further study, and they could point you in a direction.

Now have a look at the Subject Group Overviews , below, to see what an EE in that group might involve. It is worth comparing a couple of different subject groups.

Subject Group Overviews

  • Group 1: Studies in language and literature
  • Group 2: Language acquisition (incl. Classical Languages)
  • Group 3: Individuals and societies
  • Group 4: Experimental sciences
  • Group 5: Mathematics
  • Group 6: The Arts
  • Interdisciplinary essays

biology extended essay requirements

  • Category 1 Studies of one or more literary works originally written in the language in which the essay is presented.
  • Category 2 Studies of a literary work or works originally written in the language of the essay compared with one or more literary works originally written in another language. (The work originally written in another language may be studied in translation.)
  • Category 3 Studies in language based on one or more texts originally produced in the language in which the essay is presented.

Students and teachers must indicate at the point of upload which category of essay they are submitting."

From: IBO (2020) Extended Essay: Studies in language and literature

MFL Books

Students working on a language acquisition EE must demonstrate an in-depth understanding of the language, culture and society or literature studied. This understanding must be shown in the form of:

  • an analysis of a cultural context or a specific text OR
  • an analysis of trends in the culture studied and the impact of a cultural change on the form or use of the language OR
  • an analysis and comparison of literary texts.

For those undertaking a classical Greek or Latin EE, the focus is on demonstrating an understanding of a relevant or significant aspect of the language, literature and civilization of ancient Greece or Rome."

From: IBO (2020) Extended Essay: Language acquisition including classical languages

Note that you may not do your EE in a language you are studying at ab initio level .

biology extended essay requirements

The individuals and societies EE is intended to encourage the systematic and critical study of:

  • human experience and behaviour
  • physical, economic and social environments
  • the history and development of social and cultural institutions.

Students’ choice of topic should enable them to recognize that the content and methodologies of the subjects are contestable and that their study requires critical thinking.

Students must have sufficient grounding in the subject under which they submit their essay: reading a textbook or consulting an encyclopedia while writing the EE will not compensate for a lack of proper background knowledge."

From: IBO (2020) Extended Essay: Individuals and societies

Note: The IB considers Environmental Systems and Societies EEs to be interdisciplinary, so materials for these can be found under the Interdisciplinary essays tab, above.

biology extended essay requirements

"An extended essay (EE) in the sciences gives students an opportunity to apply a range of skills while researching a topic of personal interest in the field. Students working on a science EE must demonstrate an in-depth analysis of the subject matter studied, be it biology, chemistry, computer science, design technology, physics or sports, exercise and health science. This understanding must be shown in the form of a research paper involving a wellformulated research question. Students should be advised that while there is overlap between the subjects, their study should reflect one specific science area. For example:

  • biology—dealing with living organisms and life processes
  • chemistry—dealing with the composition, characterization and transformation of substances

...The nature of the topic under investigation should be different for each subject area and students should be careful if they undertake essays that may blur the boundaries between two science subjects. For example, when studying the pH of a body of water, students may investigate the chemicals responsible for the observed pH (chemistry), or the effect of the pH on the biota (biology)."

From: IBO (2020) The Sciences: an introduction from Extended Essay: The sciences

biology extended essay requirements

  • the applicability of mathematics to solve both real and abstract problems
  • the beauty of mathematics, as in, for instance, geometry or fractal theory
  • the elegance of mathematics in the proving of theorems as in, for example, number theory
  • the origin and subsequent development of a branch of mathematics over a period of time, measured in tens, hundreds or thousands of years
  • the links between different branches of mathematics, or the way that branch of mathematics has been born, or has flourished, as a result of technology.

Students should be advised on the importance of formulating logical and coherent reasons for selecting a particular topic for the EE, the need to identify a well-thought-out research question and the requirement to search for the mathematical problems that require a solution. Students must be advised that mathematical research is a long-term and open-ended exploration of a set of related mathematical problems that are based on personal observations. The answers to these problems connect to and build upon each other over time."

From: IBO (2020) Extended Essay: Mathematics

biology extended essay requirements

  • a coherent analysis and interpretation of their chosen area in relation to a posed research question
  • the testing and validation of the research and consideration of its effect on the practice of the investigated area of the arts
  • development and exploration in a disciplined and imaginative way of an area of study specifically appropriate to the curriculum area chosen
  • a link to a practical dimension.

Each subject area poses its own unique set of challenges. Therefore, the approach to the topic of investigation should reflect the particular methodology most appropriate to the arts subject being studied. Students should have logical and coherent reasons for selecting a particular topic for their essay, a well-thought out research question and an approach that allows them to develop a reasoned argument.

...While there may be overlap between the subjects in the arts and common approaches, the research topic must clearly relate to one specific arts area. If a student chooses a research area that blurs the boundaries between two arts subjects, they must ensure that their essay’s emphasis clearly lies within the arts subject for which they are submitting it. Crucially, the topic selected should reflect each student’s particular interest and enthusiasm within that subject area."

From: IBO (2020) Extended Essay: The arts

biology extended essay requirements

For example, in literature and performance, students focus on the nature of the relationships that occur between a chosen text and its adaptation for performance; in world studies an issue of contemporary global significance is explored through the lenses of two subjects ; and in environmental systems and societies the interaction and integration of natural environmental systems and human societies are explored

Students undertaking one of these options must demonstrate a solid understanding of their area of research, taking a fully integrated approach. This examination must be shown in the form of:

  • a coherently written and structured essay that effectively addresses an area of research, taking an interdisciplinary approach
  • bringing together concepts, methods and approaches from across different subjects
  • the development and exploration of an area of study specifically appropriate to the interdisciplinary choice

The most critical stage in preparing for the EE is the formulation of a logical and coherent rationale for selecting a particular topic for the extended essay, a topic that offers enough scope to provide material for a substantial essay , and the development of ideas around the topic and research question that examine existing views and argue against them."

From: IBO (2020) Interdisciplinary essays: an introduction from Extended Essay: Interdisciplinary essays

We do not recommend undertaking an EE in World Studies. If you choose to do so anyway, make sure that you consider very carefully whether your topic would fit the requirements of a single subject discipline instead. It can be challenging to juggle the requirements of two different subjects while undertaking a piece of academic research like this for the first time, particularly if you do not currently study one or both of the subjects.

Note that the Treatment of the Topic section of the Subject Guide for World Studies says that:

"It is expected that students will have a good grounding in at least one of the Diploma Programme subjects used in the EE.

If they are unfamiliar with a discipline used, they must access its syllabus so that they can identify the concepts, terminology and modes of thinking required for their EE. (Many IB syllabuses contain lists of key concepts.)"

This means that whether or not you are currently studying either or both of the subject areas your World Studies EE is based in  you will need to use DP Level concepts, terminology and modes of thinking appropriate to both subject areas.

Subject Specific Guidance

Use the links below to explore the Subject-Specific Guidance for your chosen subject. Note that it is very important to use the side navigation menu to make sure you have read ALL the relevant guidance (see example for Biology, below).

biology extended essay requirements

You MUST read the subject-specific guidance before completing your Supervisor Application Form, and reread it before completing your Research Proposal Log. You might find it helpful to take notes using the Using the Subject-Specific Guidelines table.

Electronic versions of these can be found at the top right hand side of this page (follow links). If you wish to submit your handwritten version to ManageBac, you may upload a (legible!) photograph.

Ethical guidelines

You must address the IB ethical guidelines in your Research Proposal and follow them throughout the EE process. Some Subject Guides will contain specific ethical guidelines for that subject, but here are some general guides you might need to refer to:

Extended essays from previous years

Past essays

It can be really useful at this stage to look at essays from previous Oakham students, to see what kinds of topics they investigated and what their final essays looked like. These are upstairs in the library and can be looked at while you are here.

Please remember:

  • These are all the essays from past Oakhamians and they were awarded a range of grades (which are recorded on the contents pages). They are not a set of examples of 'good' essays or even 'good' titles.
  • There have been several rule changes in the past, most notably in 2018, so make sure you are aware of the current rules.

You may take photographs of individual pages (such as the contents pages). You may not photograph or photocopy whole essays.

How do I choose a topic?

Go back to your brainstormed list of topics from the first session:

  • Eliminate any that you don’t really want to write about and focus on the rest.
  • Use the ideas on the mind map below to examine these topics and decide which might be worth further exploration. You might choose to make a mind map like this for some of your topics.

biology extended essay requirements

Before deciding on a topic you should do some preliminary research to see what information is out there. Make a few brief notes as you go.

  • General internet browsing: You could begin with some freestyle internet searching on a broad topic that interests you. Search for your topic online, give yourself an hour to follow links and see where they take you – keeping an EE focus, of course!
  • Subscription Databases : While you will almost certainly search the databases extensively for your research once you have chosen a topic, you can also browse them to help you to chose one. See the ' Browsing our subscription databases ' box below for advice on the best ones to choose for this. Using the subscription databases to help you to choose a topic also means that you are guaranteed to be able to find high quality information on that topic.
  • Talk to your teachers, friends and family

Put your notes away, forget about what you have read for a few days, then see what you remember.  This time and distance is important as it is likely that you will remember what is of most interest to you, and so the angle you should develop.

Aim to have three suggestions for topic areas you might like to explore for your EE to explore further before making a decision .

Browsing our subscription databases

You are likely to have used our databases in the past to search for information on specific topics, but many of them are also excellent when browsing for ideas. I have made some suggestions below. You will need to access them from the list on our Subscription Databases page (using the log in information given if you are not on the school network).

biology extended essay requirements

An excellent series of ebooks providing a short, academic introduction to a wide range of topics. Choose 'Browse by subject' from the menu bar to explore them (or use the excellent search facility if you know which topic you are interested in).

biology extended essay requirements

An online encyclopaedia that you can trust and cite! Choose 'Advanced' then 'Explore: Articles' to browse Britannica in a range of different subject areas.

biology extended essay requirements

Hodder Education Magazines

Although aimed at A-level students, browsing these Review magazines may be a good way to identify a broad topic of interest. After you log-in, you can choose to search the whole database or choose a specific subject and browse/search within it.

biology extended essay requirements

Other, subject-specific resources

  • Art: Oxford Art
  • Drama: Drama Online
  • Economics: Financial Times and Gale Newspaper Collection
  • English literature: Connell Guides, EBSCO Literary Reference Centre, emagazine and MASSOLIT (a video-based resource)
  • Music: Naxos Music Library, Oxford Music
  • Politics: Financial Times and Gale Newspaper Collection 

Using the Subject Specific Guidelines

biology extended essay requirements

This table will help you work with the Subject-Specific Guidelines as you choose your topic. You are not required to submit this form to your supervisor, but you might find it helpful when filling in your Supervisor Application Form and Research Proposal.

AI Prompt Catcher

biology extended essay requirements

  • AI Prompt Catcher Example

This Prompt Catcher  must  be completed if you are using AI tools as part of your initial research.  Since examiners cannot access the exact AI-generated content subsequently, you must cite and reference the tool in your essay and include a copy of the Prompt Catcher containing the generated content and the prompt you used to generate it in an appendix.

Annotated bibliography

biology extended essay requirements

This resource will help you to keep track of all the different sources you find. Once you start working with each source in more detail, you will also need a tool like the Investigative Journal to organise your notes.

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  1. IB Biology Extended Essay: Criteria, How to Score Well and Tips & Tricks

    biology extended essay requirements

  2. Biology Extended Essay

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  3. Extended Essay: Structuring Guide IB Biology EE by Matthew Bowen

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  4. New A-level biology specification example essay:The causes and

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  5. Everything you need to know about Biology Extended Essay

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  6. Biology Extended Essay

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  4. What is Extended Essay? (Conclusion)

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  6. How To Craft The Best College Essays: Express Your Unique Voice

COMMENTS

  1. Extended essay

    The extended essay is an independent, self-directed piece of research, finishing with a 4,000-word paper. One component of the International Baccalaureate® (IB) Diploma Programme (DP) core, the extended essay is mandatory for all students. Read about the extended essay in greater detail. You can also read about how the IB sets deadlines for ...

  2. PDF IB BIOLOGY: Extended Essay Assessment Criterion A: Focus and Method 6

    answerable within the limitations of resources, time and words at the student's disposal. identified clearly. clearly set within the academic framework of biology. set out prominently at the start of the essay. The student can then use the research question to formulate a hypothesis, or hypotheses, which can be tested.

  3. The Complete IB Extended Essay Guide: Examples, Topics, and Ideas

    Conclusion. References and bibliography. Additionally, your research topic must fall into one of the six approved DP categories, or IB subject groups, which are as follows: Group 1: Studies in Language and Literature. Group 2: Language Acquisition. Group 3: Individuals and Societies. Group 4: Sciences.

  4. Biology Extended Essay: The Complete Guide for IB Students

    Biology in IB Extended Essay is the examination of living organisms and their life processes. The assignment integrates biological theories and examines the nature of the subject. While you can approach a Biology EE from varying viewpoints, the treatment of the material used in your investigation must be 100% biological.

  5. Assessment Criteria

    Criterion B: Knowledge and Understanding (6 points) What It Means: This criterion assesses the extent to which the research relates to the subject area/discipline used to explore the research question; or in the case of the world studies extended essay, the issue addressed and the two disciplinary perspectives applied; and additionally, the way in which this knowledge and understanding is ...

  6. Extended Essay

    engaging in a personal exploration of the topic. communicating ideas. developing an argument." An extended essay in Biology: Must take the form of a research paper in which primary source data is collected and analyzed. Must demonstrate argumentation, comparison, or the extraction of relevant information or data.

  7. PDF Student Guide: Extended Essays in Biology

    An extended essay in biology provides you the student with an opportunity to apply a range of skills while researching a topic of personal interest in the field of biology. The nature of an extended essay in biology is characterized by a particular biological emphasis within the more general context of a scientific investigation. Choice of topic.

  8. Supervising your Biology extended essay

    Supervising your Biology extended essay. In this Diploma Programme (DP) Supervising the Biology Extended essay (EE) resource, you will receive subject-specific guidance, learn about the assessment criteria, and explore three examiner-annotated student samples. To start, the resource will provide a quick overview of where to find the most up-to ...

  9. IB Biology Extended Essay: Criteria, How to Score Well and Tips

    Ella, one of our experienced Biology tutors, breaks down what a Biology EE really is. She'll take you the through the criteria and how to score well in each ...

  10. What I learned from messing up my biology extended essay

    I'm sure all the current and past IB students know the hardship of completing an Extended Essay (EE). And for those who are not familiar with EE, it is actually " an independent, self-directed piece of research ", which culminates into a 4,000-word paper. To many (including me), EE was a real boot camp training because of the effort and ...

  11. PDF Extended essay guide

    The viva voce is a short interview between the student and the supervisor, and is a recommended conclusion to the extended essay process. Students who do not attend the viva voce may be disadvantaged. The viva voce serves the following purposes. A check on plagiarism and malpractice in general.

  12. IB Extended Essay in Biology

    An IB Extended Essay in Biology is a 4,000-word thesis that a student of the International Baccalaureate Diploma Programme is expected to submit as part of the curriculum. The IBDP course is unique in the sense that it provides students with an opportunity to go beyond the subjective knowledge of books and explore their inherent observatory and research skills with EE, TOK, and CAS.

  13. Researching and writing an IB Extended Essay in Biology

    The Extended Essay is a compulsory component of the IB Diploma. Students are tasked with writing four thousand words on a topic of their choice relating to one of the subjects they are studying for their Diploma. Every student is allocated a supervisor who will guide them through the process. It is not an exaggeration when I say that ...

  14. Sciences: Biology

    Choosing a Topic. Biology is the science that deals with living organisms and life processes. A biology EE should incorporate biological theory and emphasize why it is relevant today. The topic must relates specifically to biology. Many topics can be approached from different viewpoints, but for an EE in biology the treatment of the topic must ...

  15. IB Biology EE examples

    EE Biology B. The digestion rate of oatmeal after different pre-soaking treatments and its correlation to Glycemic Index. EE Biology B. High scoring IB Biology Extended Essay examples. See what past students did and make your Biology EE perfect by learning from examiner commented examples!

  16. Extended Essay (IB): Choosing a subject and topic

    Choosing a subject and topic. For your EE you have the freedom to focus on almost any topic and you will write your own question to answer. However, your topic must fit into a single DP subject (unless you choose to write an interdisciplinary essay, such as a World Studies EE that covers a topic "of contemporary global significance" and is likely to encompass two subject areas).

  17. PDF Biology: Subject-specific guidance

    See also: Extended essay guide and Extended essay teacher support material Overview An extended essay (EE) in biology provides students with an opportunity to apply a range of skills while researching a topic of personal interest in the field of biology. Biology is the science that deals with living organisms and life processes.

  18. PDF International Baccalaureate Diploma Program Extended Essay Student

    4) Nature of the Extended Essay. The Extended Essay (EE) is an in-depth study of a focused topic chosen from the list of approved Diploma Programme subjects—normally one of the student's six chosen subjects for the IB diploma and one which is of special interest to the candidate.

  19. Biology Extended Essay Topics

    Biology EE Topics | 40 Ideas. Luke MacQuoid. January 24, 2023. There are many potential topics for a biology Extended Essay (EE) in the International Baccalaureate (IB) program. Topic Ideas. Some possibilities include the following: The effects of pollution on a particular species or ecosystem. The genetic basis of a specific disease or trait.

  20. World Studies Extended Essay

    A world studies extended essay must focus on a topic of global significance. This encourages the student to reflect on the world today in relation to issues such as the global food crisis, climate change, terrorism, energy security, migration, global health, technology and cultural exchange. The student should then explore how their chosen ...

  21. PDF IB WORLD STUDIES: Extended Essay Assessment

    Criterion A: Focus and Method - 6 points possible. The student should identify an issue (topic) of global significance and examine it through one or more local manifestations. The significance and importance of the global issue must be established in the introduction (this might take rather longer than in other subjects).