Written especially for students preparing for middle secondary examinations by experienced teachers and examiners who can give students the confidence to succeed in their exams this series is endorsed by University of Cambridge International Examinations. This study guides provide a wealth of information including: - the key facts for each topic - explanations of common misconceptions and errors - sample questions and students answers with examiners comments on how to improve grades - further questions for practice - brief explanations of each topic followed by worked examples and questions