Regular Test Prep: Workbook for Math, Grade 2 Includes: Problem Set, Check & Try, Answers and Explanations These three books are included. It seems to be edited with reference to the Keirinkan textbook "Math Spreading to the Future 2". They have been used very little. I have checked them over, and it seems there are no writings, but I apologize if I missed anything. The name written on the back cover has been erased.