Mathematics for Edexcel GCSE - Main texts. The Main Texts provide thorough preparation for students on either a 1-year or 2-year course with clear, student-friendly language used throughout. Each chapter consists of: *Fully worked examples with explanatory notes and commentary *Carefully graded exercises *What you need to know - a summary of key facts and skills *A review exercise consisting of exam-style questions which reflect how Edexcel assess the work, plus lots of pass exam questions. Section reviews give further opportunities to consolidate skills acquired over a number of chapters. Exam practice sections contain compilations of exam and exam-style questions organised for non-calculator paper and calculator paper practice, in preparation for the exams.