"Gakuken's early childhood ability development series" where you can choose the appropriate one depending on your child's age, development and interest This book is full of the know-how of Gakken, who has been engaged in education for many years. Once you have started to be interested in numbers, you can practice drills that count from 1 to 10 and represent them with numbers. 257x 182mm B5 size 32Page