Stack 'em up & spin 'em around! The Fisher-Price Spinning Stackers keeps little hands busy as can be with a fun twist on classic stacking play. Your baby can stack the five colourful toys up high, then bat to make them spin 'round & 'round. Where development comes into play. Gross Motor: Little ones develop balance & coordination as they learn to sit-up on their own & reach out to interact & bat-at the spinning stackers. Thinking Skills: As your baby figures out how to stack, unstack, & spin the stackers, they're developing important problem solving skills. Fine Motor: All that grasping, stacking, & spinning helps your baby develop h&-eye coordination.