Most of us have seen them. Many of us own a set. Thirty-two blocks in four shapes and four colors. Satisfying wood blocks which we generally relegate to the toddler, can be used to teach attention skills, visual perception, eye-hand coordination, and other thinking skills.
Every block is outlined.
Do not show child the secret. Let him work it out for himself. B. Every block is used. Every color is outlined. Only some blocks are used.