This is the drill I recommend the most, which my child worked on when they were 4-5 years old! In our house, the "amusement park sugoroku" at the end was especially great! We repeatedly played this sugoroku game while using a 100-bead abacus we already had, and my child became able to calculate money. ● Since it was copied and used, there are no markings. No pages have been detached. ● The corners are slightly bent. (Photos 4-5) ● I will ship it using recycled materials from home. ● Please purchase this as a used book. "Yoji no Tensai Zunou Drill Chie Asobi: Average IQ 150+ Shotoku Gakuen Style 4-5 Year Olds" Tomoyuki Wada #TomoyukiWada #Book #Society/Education/Learning