1. Core Theme: Knowledge and the Knower
2. Optional Themes
3. Areas of Knowledge
3.1 History
3.2 The Human Sciences
3.3 The Natural Sciences
3.4 The Arts
3.5 Mathematics
4. TOK Assessments
6. Nov 2026 TOK Titles
Browse syllabus-aligned notes for 3.3 the Natural Sciences. Open each subtopic for focused explanations, examples, and summaries.
3.3.1 How Science Builds Trustworthy Knowledge
8 minute read
3.3.2 Big Shifts in Scientific Thinking
6 minute read