Akira Tago's Activity Book - Math Problems (Age 4) • 數學遊戲4歲：多湖輝的NEW頭腦開發

Part of a bestselling activity book series (39 million copies sold), this is a great activity book for kids who loves problem-solving!

Printed in full colour with rewards stickers, with fun and engaging activities designed for 4 year-olds . This book is designed to develop hand-eye coordination, fine-motor skills and problem soliving abilities.

Designed by Akira Tago who was a Japanese psychologist. He was an honorary emeritus of Tokyo Future University and a professor emeritus of Chiba University. He was also known for designing the puzzles of video games, including the Professor Layton series, in which he is cited as a "Puzzle Master" in the credits.