Peiyou*************

This book is very good! My child is in seventh grade and his math scores are pretty good. I have been looking for a book to help him improve his ability to solve and analyze problems. This book is perfect for him. Moreover, the example questions in the book are very typical. Children can learn a type of questions by solving one question, and can also draw inferences from one example. I think this book has been of great help to him, and I recommend it to you!