Comprehensively revised and updated, this 2nd Edition has been endorsed by WJEC. ┒ Comprehensive and concise coverage of the specification, with any additional content clearly highlighted to provide students with stretch and challenge opportunities┒ 'Answering exam questions' at the end of each unit gives guidance on command words and how to approach each question┒ 'Exam Practice questions' at the end of each unit are taken from actual WJEC past papers with answers provided in the book┒ Increased maths support with maths skills and techniques regularly tested throughout.┒ Clear explanations and diagrams throughout.