By Jamie York Making Math Meaningful : A Middle School Math Curriculum for Teachers and Parents (3rd Third Edition) [Paperback]

From the introduction: "While most of my teaching experience is within the Waldorf school system, the curriculum presented here can be effectively used by any teaching wishing to bring meaningful, age-appropriate material to their students. The explanations used in this book are also helpful for parents (or tutors) who are helping their children in a math class that uses the curriculum laid out in this book.