Even the tiniest hands can grab and stack Baby's First Wooden Magnetic Blocks. This six-piece starter set is a wonderful gift for babies and toddlers as young as six months to practice grasping and stacking skills Each block has a white or green dot on either side, allowing blocks to attach to the opposite color and teaching children that opposites attract. Whether stacking them up, counting them, or knocking them down, babies will love this introduction to the magnetic building wonder of Tegu Blocks! These blocks work with all Tegu magnetic wooden blocks so your child's collection can grow as their skills do! Each block measures 1.75 inches square