50 geometry puzzles to improve arithmetic comprehension. Suitable for all elementary school grades. *Limited-time offer! Please consider this opportunity!* Used for killing time while out and about, so there is some soiling and minor scratches on the cover and sides from carrying it around, but there are no markings inside. Also, the origami pages in the book that can be cut out are unused. Why not have fun improving your child's arithmetic comprehension? - Title: Geometry Puzzles Learned Through Origami - Author: Eiichi Yamaguchi - Contents: 50 problems to improve arithmetic comprehension, from shapes, angles, and area to fractions and multiplication. - Publisher: Discover Twenty One - ISBN: 978-4-7991-0154- - Price: 1000 yen Thank you for looking.