The Brilliant Basics Rock-a-Stack is a classic infant play pattern and Fisher-Price toy that helps develop bright futures!Baby can sort and stack the rings, then bat at the base to watch it rock back and forth. Bright colors, shiny reflections and swirling beads add to the fun!Developing Motor Skills: Placing rings on post strengthens eye-hand coordination. Grasping & sorting rings develops fine motor skills.Encourages Cognitive Abilities: Fosters problem-solving skills as baby figures out which ring comes next. Helps baby learn to differentiate among colors and sizes of rings. Stimulating the Senses: Bright colors, shiny reflections & swirling beads stimulate visual development. Hands-on activities strengthen baby's sense of touch.