23 textbooks with free e-books, 41 expert authors and 939 interactive resources. Find everything you need to teach the International Baccaulearate (IB) Diploma curricula – in the classroom, during independent study and for revision – in textbooks written by leading IB experts, full of clear links to Theory of Knowledge (ToK), and exam-style assessment opportunities and guidance. Click on an IB Group to find out more, look inside the textbooks and find free resources.