This book (with free Online Edition) is full of detailed revision notes and clear diagrams for GCSE Biology students. It covers every topic for the OCR Gateway year 10 and 11 exams. The whole thing's designed to make revision straightforward - each section is split into a topic per page, with questions to check what you've learnt at the end. It's all explained simply and thoroughly with lots of handy exam tips and guidance on 'How Science Works' and the Controlled Assessment. What's more, there's a code that gives you access to free Online Edition of the entire book - perfect for revising on a PC, Mac or tablet.