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
5. May 2026 TOK Titles
3.3.1 How Science Builds Trustworthy Knowledge
3.3.2 Big Shifts in Scientific Thinking