Problem sets for elementary school students to develop logical thinking skills. - Title: Logical Kids Work: Basic Edition - Title: Logical Kids Work: Introductory Edition - Publisher: Gakken - Language: Japanese - Target age: Elementary school students - Contents: Problem sets to develop logical thinking skills. Classified as "poor condition" due to being cut for scanning. No writing inside. The covers have not been cut. Each volume is held together with a rubber band. Due to the nature of the product, returns and cancellations are not accepted.