"Akihiko Takahashi has been at the heart of TTP from its beginnings in Japan, first as a master teacher, and then as a researcher and coach. This edition of Teaching Mathematics Through Problem Solving comes at a time when we need to focus on teaching mathematics for deep and meaningful understanding, flexible thinking, and problem solving – all of which help with skills as well. If you’ve wondered why Japanese teachers and students do so well at mathematics, this book will show you why and how."Alan Schoenfeld, Series Editor, from the Foreword