9Develop knowledge with this thought-provoking guide through the 5 Areas of Knowledge and the 5 Optional Themes covered in the IB Diploma programme. - Guides students by helping them examine the nature of knowledge and ways of knowing - Develops diverse and balanced arguments with a variety of activities, exploration of knowledge questions and Deeper Thinking features. - Aids understanding with detailed definitions of all key terms - Provides assessment support with areas of relevance highlighted for the TOK exhibition or Essay