This CGP Revision Guide is the catalyst for Higher Level GCSE OCR Gateway Combined Science success. It contains clear, concise notes on the whole course - everything from enzymes to electromagnetic waves - and covers all the Required Practicals too. There are also exam-style questions that test students on what they''ve learnt, with full answers at the back of the book. Not only that, we''ve included plenty of video solutions to walk students through answers step-by-step, as well as online quizzes for quick and fun knowledge retrieval practice.We''ve even thrown in a free Online Edition of the whole book. Cracking!A matching Exam Practice Workbook (9781782945185) is also available, with hundreds of realistic exam-style practice questions for every topic in this Revision Guide. For students studying Combined Science (sometimes called ''Double Award Science'').