A collection of puzzles to train arithmetic thinking, with a focus on geometric problems. - Title: Arithmetic Brain Puzzles to Develop Thinking Skills: Figure Tracing Puzzles for Elementary School Grades 1-3 - Authors: Masanobu Takahama, Kei Kawashima, Tomoya Niiyama - Publisher: Tokyo Shoseki - Price: 1100 yen Thank you for viewing. Please note that this item may be removed without notice as it is also listed on other sites.