Wormin' Along by Discovery Toys Encourages toddlers to stand and walk. Spinning patterns on the wheels and the rotating marble balls stimulate visual tracking and development. Changing the location and positioning of the marble balls on the toy teaches cause & effect and develops early critical thinking. Rattle sound of the marble balls and the clicking head stimulate hearing development. Turning the head for clicking sound teaches cause & effect and develops gross motor skills. Balls can be removed and spun or rolled individually for more visual stimulation and motor skill development. Free-wheeling worm encourages imaginary play. From 12m  Preschool.