What is number sense? How do children develop number sense? What are the most effective teaching methods and resources? How can research findings inform classroom practice? This fascinating book, designed as a companion volume to Teaching Number Sense for the later primary and early secondary years, will help you answer these questions, and more. Reflecting recent research into children's mathematical learning, Julia Anghileri focuses on the connections that help to develop understanding, such as how counting underpins many calculating methods and the way mental working and informal jotting can support problem solving. She uses a balance of theory and practice to help teachers deal with the problems and issues they encounter on a day-to-day basis in mathematics teaching, including examples for use specifically in the classroom. This book will prove essential reading for trainee and established mathematics teachers alike.