This book provides an overview of mathematics teaching at secondary level and links established mathematics content to recent curriculum developments in mathematics teaching in England, Wales and Scotland. Its main purpose is to instigate and complement good mathematics teaching practice in the classroom. It considers different approaches to teaching, e.g: discussions with pupils, problem solving and mathematical investigation, and uses diagrams to augment and develop mathematical thinking. It also aims to offer practical, sensible and coherent advice on the teaching of mathematics. It is aimed at trainee secondary mathematics teachers. It is suitable for any pre-service training course for mathematics teachers and any pre-service training course but particularly those in sciences.