Great maths teaching opens doors for pupils, giving them new ways of experiencing the world. But, like maths itself, great maths teaching is not merely following a formula or memorising a set of teaching strategies. As maths teachers, we need to make decisions that lead to great learning. This means knowing what it means to learn maths, how pupils learn maths, and the actions we can take to do this. This book unites these elements, providing a practical guide to help maths teachers think about teaching so they can apply the evidence around effective maths teaching in their classrooms.