Longman Revise Guides have been written and compiled by the people who set GCSE papers and mark them - the examiners. They cover exactly what students need to know, understand and revise in each subject for maximum success, so that students can approach GCSE with confidence. Each book gives expert advice in planning a revision programme effectively - how students should pace themselves, how to make the most of their time and energy, and how to make continuous assessment really work. Students who began their GCSE Mathematics course in September 1993 follow the National Curriculum Key Stage 4 syllabus. The new edition of this Revise Guide has been completely revised and updated to cover the new syllabuses and Attainment Targets. This book is for students who expect to attain the highest grades and/or take the extension paper. Key features: syllabus breakdown and analysis; coursework preparation and presentation; essential principles and applications; examiner commentary throughout; exam questions and specimen answers; typical student's answers with the examiner's opinion and comments; pull-out review sheets at the end of most topic-based chapters.