What does the three-in-one math exercise book mean?
This book is a math exercise book that integrates classroom notebook, classroom exercise book and error correction revision book. Three-in-one is that the booklet integrates three functions: classroom notebook, classroom exercise book and error correction revised edition. The three-in-one math exercise book refers to the math exercise book with three functions: classroom notebook, in-class exercise book and error correction book. Mathematics is about numbers and shapes.