My child used to watch this a lot at one point. This book has substantial content that could be a gateway for children interested in arithmetic. There are some folds and stains on the cover, but the inside is almost clean. I think there is no problem with reading it. I hope those who don't mind it being used will consider it. A reference book for learning the basics of mathematics in a fun way. - Title: Arithmetic Fun Encyclopedia - Contents: A book for learning the basic knowledge of mathematics in a fun way - Chapter Structure: Chapter 1: The Beginning of Arithmetic Chapter 2: Cultivating Arithmetic Thinking Chapter 3: Developing Arithmetic Sense Chapter 4: Refining Arithmetic Techniques - List price: 3800 yen Thank you for viewing. #ElementarySchoolStudent #Arithmetic #Interest #ArithmeticFunEncyclopediaIQ