How TOK connects to your other IB subjects
To connect TOK concepts to learning in other subjects, examine how each discipline produces, justifies, communicates, and limits knowledge. Identify a specific claim, ask what supports it, and consider whether another discipline would judge that claim differently.
This approach is particularly useful from September to November, when new units provide fresh examples. The aim is not to force TOK into every lesson, but to notice when evidence, certainty, interpretation, objectivity, values, or responsibility genuinely matter.
The IB's explanation of Theory of Knowledge defines TOK as reflection on the nature of knowledge and how we know what we claim to know. The official TOK subject brief also explains that TOK helps connect the subjects studied across the Diploma Programme.
Examine knowledge, not only subject content
A subject question asks about the world. A knowledge question asks how knowledge about that world is produced, justified, interpreted, or limited.
- Biology: What effect does temperature have on enzyme activity?
- TOK: How do experimental controls affect the reliability of scientific knowledge?
- History: Why did a particular revolution occur?
- TOK: How does source selection shape explanations of historical causation?
- Mathematics: How can this theorem be proved?
- TOK: Why does deductive proof create a different kind of certainty from empirical evidence?
The TOK question should not replace subject knowledge. You need to understand the content before analysing the knowledge practices behind it.
Use four TOK lenses in any lesson
The TOK knowledge framework provides four useful lenses: scope, perspectives, methods and tools, and ethics.
| Lens | Question to ask |
|---|---|
| Scope | What can this discipline explain, and what lies beyond its reach? |
| Perspectives | How might culture, language, background, or training affect conclusions? |
| Methods and tools | How was the knowledge produced, tested, represented, or communicated? |
| Ethics | What responsibilities arise from producing or applying this knowledge? |
For genetic modification, biology can explain mechanisms and investigate outcomes, but it cannot independently decide social priorities. Methods and tools draw attention to experiments, statistics, models, and laboratory equipment. Ethics introduces risk, consent, fairness, and the distinction between what can be done and what should be done.
Connect TOK concepts to particular subjects
The strongest connections show how a concept behaves differently across disciplines. RevisionDojo's guide to TOK Areas of Knowledge can help distinguish their characteristic methods without reducing them to rigid stereotypes.
Natural and human sciences
In the natural sciences, look for evidence, objectivity, explanation, certainty, and responsibility. After an experiment, ask what assumptions the method made, whether the evidence establishes causation, how uncertainty affects the conclusion, and what findings could require revision.
In the human sciences, consider culture, perspective, power, values, and generalisation. An economic model may rely on simplifying assumptions about behaviour. A psychology experiment using one population may not justify a universal claim, even when its internal method is carefully controlled.
History and mathematics
History raises questions about evidence, interpretation, perspective, and justification. Rather than merely calling a source biased, ask whether its perspective limits some uses while making it valuable for understanding a group's beliefs. Consider who preserved the evidence and which voices are absent.
Mathematics connects to certainty, truth, proof, explanation, and modelling. A conclusion can follow validly within an axiomatic system, while a mathematical model may still misrepresent reality if its assumptions or input data are weak. RevisionDojo's comparison of mathematics and the natural sciences explores this distinction further.
Language, literature, and the arts
These subjects make interpretation, culture, values, and power especially visible. An interpretation is not sound merely because it is personal; it should be supported by textual, visual, contextual, or formal evidence.
Ask how translation, genre, historical context, or audience expectations shape meaning. In the arts, compare the authority of an artist's intention with that of an informed audience. The TOK issue is what makes one interpretation more defensible than another.
Build a TOK connection notebook
Keep one page or digital table for each subject and add one useful entry per week. Use this structure:
- Topic: Identify the lesson, experiment, model, source, text, or case study.
- Knowledge claim: State what is being accepted as knowledge.
- Method: Explain how the claim was produced or justified.
- TOK tension: Add a limitation, competing perspective, or ethical concern.
- Transferable question: Convert that tension into an open knowledge question.
A psychology entry might identify experimental data as evidence, question whether the sample represents other cultures, and ask: “To what extent does cultural context limit generalisations in the human sciences?” Specific records are more useful than lists of abstract concepts.
Follow a September-to-November routine
In September, focus on evidence and justification. After selected lessons, write one sentence explaining how the discipline established a claim. Use RevisionDojo TOK Study Notes to clarify terminology, but connect every reflection to an actual lesson.
In October, compare one concept across two subjects. For example: “In chemistry, this claim is justified mainly through controlled experimentation, whereas in history, greater weight is placed on corroborating contextualised sources.” This comparison reveals differences in disciplinary standards.
In November, select examples that are specific, accurate, debatable, and capable of supporting more than one perspective. The guide to knowledge questions and Areas of Knowledge can help refine comparisons. Jojo AI can suggest objections or expose assumptions, but you should verify factual claims independently.
Turn an example into TOK analysis
For any promising example, identify the claim, evidence, method, assumptions, alternatives, and implications. Consider a climate model studied in geography. Subject description explains its prediction, while TOK analysis examines how simplifying assumptions enable prediction, why uncertainty does not make a model useless, and what responsibilities decision-makers have when evidence remains incomplete.
Your notebook can support assessment preparation, but it is not a prewritten submission. The exhibition requires discussion of specific objects in real-world contexts, while the essay requires sustained analysis of a prescribed title. Check the official TOK assessment overview and RevisionDojo's TOK essay and exhibition guide before adapting examples.
Common mistakes to avoid
- Forcing connections: Not every lesson contains a meaningful knowledge problem.
- Using vocabulary decoratively: Naming perspective or objectivity is not analysis.
- Confusing opinion with perspective: Perspectives should connect to evidence, methods, experience, or context.
- Explaining only subject content: State what the example reveals about knowledge.
- Using broad examples: A named study, source, proof, or artwork supports sharper analysis.
- Treating disciplines as opposites: They may share tools while applying different standards.
Conclusion
Connecting TOK to other subjects means noticing what counts as evidence, how methods justify claims, where perspectives shape interpretation, and when ethical responsibilities arise. One precise weekly example will usually be more valuable than memorising disconnected terminology before assessment.
RevisionDojo's TOK Study Notes, TOK concept flashcards, and Jojo AI can help you clarify concepts, compare disciplines, and test counterarguments while keeping the final reasoning your own.
Sources and referenced URLs
- IB: What is Theory of Knowledge?
- IB Theory of Knowledge subject brief
- IB TOK curriculum and assessment overview
- RevisionDojo guide to TOK Areas of Knowledge
- RevisionDojo on mathematics and natural sciences
- RevisionDojo TOK Study Notes
- RevisionDojo guide to knowledge questions and Areas of Knowledge
- RevisionDojo TOK essay and exhibition guide
- RevisionDojo TOK concept flashcards