FortyFive: IB revision for every subject
FortyFive: IB Diploma revision built by IB students. Lessons for all 20 subjects following the current IB guides, interactive diagrams, exam-style practice papers with mark schemes and a study planner. Start free.
Free IB revision notes
- IB Maths: Analysis & Approaches revision notes
- IB Maths: Applications & Interpretation revision notes
- IB Physics revision notes
- IB Chemistry revision notes
- IB Biology revision notes
- IB Economics revision notes
- IB Business Management revision notes
- IB Psychology revision notes
- IB Geography revision notes
- IB Environmental Systems & Societies revision notes
- IB Sports, Exercise & Health Science revision notes
- IB Computer Science revision notes
- IB English A: Language & Literature revision notes
- IB French B revision notes
- IB Spanish B revision notes
- IB History revision notes
- IB English A: Literature revision notes
- IB Global Politics revision notes
- IB English B revision notes
- IB Digital Society revision notes
IB study guides
- How to get a 45 in the IB
- How IB points work (and how to pass the diploma)
- How to revise for IB exams
- IB History new syllabus: first exams in 2028
- IB Global Politics Paper 3: the complete HL guide
- IB Maths AA vs AI: how to choose
- IB Language B Paper 1: how to score a 7
- IB Digital Society inquiry project: the complete guide
IB points calculator · All revision notes · All guides
FortyFive is an independent resource, not affiliated with or endorsed by the International Baccalaureate Organization.