Thank you for viewing. No comments & immediate purchase OK. Thank you. Only the first page of the introductory edition has been cut out and used. There are no folds or stains, but please purchase only if you understand that it has been stored at home for several years. Puzzles to improve both arithmetic and Japanese: Develops the ability to think and the ability to try and error: For all elementary school grades Tetsuya Miyamoto Introductory Edition, Elementary Edition, Advanced Edition Each list price: ¥600