This book should be required reading by every math educator...especially elementary teachers, whose math backgrounds are typically not as strong as secondary math teachers (though their teaching skills may be flawless). It should also be required reading by administrators and school board members who make the decisions concerning what(and especially how) math is taught in our schools. Concerned parents could also learn much that would enable them to help their children learn math easier and provide better basic skills.

This book is written professional will be better served by Hattie's "Visible Learning".