"The Book That Makes Children Who Dislike Arithmetic Love It: Understanding the Stumbling Blocks and Teaching Methods for 6 Years of Elementary School" Masanobu Takahama Price: ¥1700 #MasanobuTakahama #Masanobu_Takahama #Book #Nature/Mathematics I bought this book because I wanted to know where children who are not good at arithmetic stumble. It was a helpful book.