This text provides comprehensive coverage of GCSE Double Award syllabuses with suitable progression from KS3. It is divided into three sections covering the biology, chemistry and physics strands, thus also offering flexibility for teachers. The book uses everyday examples to illustrate concepts and has a strong emphasis on factual information and full colour illustrations, clarifying and extending information in the text. End-of-chapter questions are designed to help students' self assessment and support progress toward GCSE examinations.