This 3rd Edition has been extensively revised for the new course starting September 2004. The material has been completely re-edited, with contributions made by workshop leaders, past and current examiners and experienced IB mathematics teachers. This has enhanced presentation and improved both clarity and accuracy throughout the text. This is the most comprehensive resource available specifically for this subject, containing a large increase in the number of worked examples and exercises, detailed use of the graphics calculator is interwoven throughout to aid learning and understanding, practice examination questions, specifically written for the new course by experienced examiners, revision exercises strategically placed throughout the text, and project suggestions with guided questions to help students develop project topics.