The IB Diploma Programme Course Companions are resource materials des igned to support students throughout their two-year Diploma Programme comse of study in a particular subject. They will help students gain an understanding of what is expected from the study of an IB Diploma Programme subject wh ile presenting content in a way that illustrates the purpose and aims of the IB. They retlect the philosophy and approach of the IB and encourage a deep understanding of each subject by making connections to wider issues and providing opportunities for critical thinking.