- 考える力がつく算数脳パズル 迷路なぞぺー 5歳~小学3年
- Parenthood Is, 10 Years The Realm.
- (Drill series to nurture a child clever) arithmetic brain drill three-dimensional king point connection cross-sectional view Hen ISBN: 4053030676 (2009) [Japanese Import]
- 小学4年〜6年生 考える力がつく算数脳パズル 鉄腕なぞぺー
- (Drill series to nurture a child good Gakken head) four-year second grade - elementary - power hen looks arithmetic brain drill three-dimensional king ISBN: 4053025648 (2007) [Japanese Import]