"Welsh language edition Out now! Comprehensively revised and updated, this 2nd Edition is endorsed by WJEC offering high quality support you can trust. Straightforward and concise coverage of the specification, with any additional content clearly highlighted to provide students with stretch and challenge opportunities. New section on 'Answering exam questions' at the end of each unit gives guidance on command words and how to approach each question. New '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."