This new edition of CGP's Higher Level OCR GCSE Maths Revision Guide is bang-up-to-date for the latest 'Grade 9-1' course! It's packed with concise, friendly explanations of every topic, backed up with plenty of step-by-step examples. Grade information (on the new 9-1 scale) is included to show the difficulty level of each topic, and there are exam-style questions at the bottom of each page to test you on the important skills. And finally, a unique code is printed in the book that gives you access to the free Online Edition of the whole book on your PC, Mac or tablet! For even more help with this course, don't forget CGP's matching Workbook (9781782943808), Exam Practice Workbook (9781782943785) and Grade 9 Exam Practice Workbook (9781782944171).