Do IB Biology students receive a formula sheet in the exam?

It depends on the examination cohort. Students sitting the course first assessed in 2025, including the 2026 and 2027 cohorts, do not receive a separate Biology formula sheet. A dedicated Biology data booklet is scheduled for examinations from first assessment in 2028. Students in that course receive a clean copy rather than bringing an annotated personal copy. Always confirm your cohort’s arrangements with your teacher because materials from different syllabus versions are easily confused.

Can I bring my own IB Biology data booklet into the exam?

No, you should not plan to bring a personal booklet into an IB examination. Where a data booklet is authorized, the examination centre provides the required clean copy. Personal annotations, highlighting and tabs therefore cannot be used during the examination. You may annotate a practice copy while learning its structure, but you should also practise with a clean copy. Follow the instructions from your school and those printed on the examination paper.

Do I need to memorize formulas if I receive the 2028 booklet?

You do not need to memorize every expression reproduced in the official booklet, but you must understand when each expression applies. You should know the meanings of the variables, the expected units and how to rearrange common relationships. The booklet will not decide which formula answers the question. It will also not provide the biological explanation required after many calculations. Familiarity remains essential because repeatedly searching through the booklet wastes examination time.

Are calculators allowed in IB Biology examinations?

The official specimen papers for the course first assessed in 2025 state that a calculator is required. Your calculator must comply with the IB rules communicated by your examination centre. This differs from some older Biology arrangements, so advice based on the previous syllabus may be misleading. Practise entering scientific notation, powers and statistical calculations before the examination. You should still show sufficient working because an unsupported calculator answer may not demonstrate the required method.

Which IB Biology calculations should I practise most?

Practise magnification, scale bars, percentage change, means, ratios and unit conversions until the method is automatic. You should also be prepared to apply statistical procedures named in the course, including chi-squared and the t-test, in the contexts specified by the syllabus. Data-based questions may require rates, gradients, uncertainties or comparisons derived from unfamiliar graphs and tables. Do not learn formulas without practising how to interpret the resulting value. Calculation practice is most effective when completed through mixed exam-style questions rather than isolated substitution exercises.

What is the best way to practise using the Biology data booklet?

Begin each question by identifying the command term, required quantity, supplied values and units before consulting the booklet. Locate one relevant entry rather than browsing several sections. Write the formula, substitute values, calculate and give the answer with an appropriate unit and precision. Finish by stating what the result means in the biological context when the question requires interpretation. Timed Questionbank sets and clean-copy practice help turn this process into a reliable examination routine.

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How to Use the IB Biology Data Booklet

RevisionDojo Team

•Last updated: 29 Jul 2026•6 min read

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The IB Biology data booklet rules depend on your examination year. Students taking the course first assessed in 2025, including the 2026 and 2027 cohorts, do not receive a separate Biology formula booklet. A dedicated booklet is scheduled for the maintained course with first assessment in 2028, when clean copies will be provided for written examinations.

Download and cohort check

Examination cohort	Official Biology booklet	Preparation priority
2026 or 2027	No separate booklet	Recall formulas and practise calculations independently
2028 onward	Clean booklet provided in the examination	Learn its layout and practise applying its contents

The official 2028 booklet is distributed to schools through IB channels. Ask your Biology teacher for the version assigned to your cohort rather than relying on an unofficial download, which may be incomplete or based on another syllabus. The official IB Biology page provides the publicly available course overview, while the IB specimen papers show the assessment style.

Current-cohort calculation reference

This is a revision reference, not an official booklet permitted in the examination.

Calculation	Relationship
Magnification	image size ÷ actual size
Percentage change	((final − initial) ÷ initial) × 100
Mean	sum of values ÷ number of values
Chi-squared	χ² = Σ((observed − expected)² ÷ expected)
Cardiac output	heart rate × stroke volume

Always convert quantities to compatible units before substitution. For magnification, for example, image size and actual size must be expressed in the same unit.

What is not given

For the 2026 and 2027 examinations, do not expect a Biology formula sheet. Even from 2028, the booklet will not supply complete explanations, command-term knowledge, calculation methods, unit conversions, or the biological interpretation of an answer. A formula is useful only if you can select it, rearrange it and explain the resulting value.

How to use the booklet in an exam

Use a three-stage routine: diagnose, retrieve, apply. Identify the requested quantity and units before opening the booklet, find only the relevant equation or diagram, and then show substitution, working and interpretation. Do not browse the booklet without a specific purpose.

Practise this routine using the IB Biology Questionbank. The Biology Flashcards support recall for material that is not provided, while the Biology Cheatsheets help consolidate calculations and concepts.

Conclusion

First confirm your cohort: 2026 and 2027 students receive no separate Biology data booklet, while 2028 students should work from the clean official version supplied through their school. In either case, marks come from correct selection, working, units and biological interpretation. RevisionDojo’s Questionbank, Flashcards and Jojo AI can help you practise those skills under realistic conditions.

Sources and referenced URLs

Examination cohort

Official Biology booklet

Preparation priority

2026 or 2027

No separate booklet

Recall formulas and practise calculations independently

2028 onward

Clean booklet provided in the examination

Learn its layout and practise applying its contents

Calculation

Relationship

Magnification

image size ÷ actual size

Percentage change

((final − initial) ÷ initial) × 100

Mean

sum of values ÷ number of values

Chi-squared

χ² = Σ((observed − expected)² ÷ expected)

Cardiac output

heart rate × stroke volume

How to Use the IB Biology Data Booklet