(BOOK) Grab a pencil and get ready to become a problem-solving superstar with activities, puzzles, and games that will g... (more)
(BOOK) Grab a pencil and get ready to become a problem-solving superstar with activities, puzzles, and games that will give your brain a serious boost. Master mystifying mazes, crack coded messages, and uncover the secrets behind optical illusions, all while learning about your own amazing mind. (less)