This book explores how mathematical mastery, influenced by East Asian teaching approaches, can be developed in a UK context to enhance teaching and to deepen children's mathematical knowledge. It gives guidance on using physical resources to demonstrate key concepts, extended examples on how to teach different curriculum topics and how to plan for small-step progression. Key coverage includes: - Key terminology in mastery-style teaching - The challenges in implementing a mastery approach - The use of manipulative resources for deeper understanding - An analysis of mastery and related schemes of work currently available - Assessing mastery - How to apply mastery concepts in the early years