At over 14 inches tall, Fisher-Price’s Giant Rock-a-Stack takes the classic stacking game to new heights. Your baby can grab and shake the six extra large, colorful rings, then stack them on the oversized base. And the little ring has spiral beads inside for your baby to fidget and explore. Where development comes into play. Gross Motor: Standing to drop rings on the base helps strengthen your baby’s balance and coordination skills. Fine Motor: Gripping and stacking the rings helps strengthen dexterity and hand-eye coordination. Thinking Skills – Figuring out how to order and stack rings from largest to smallest helps promote problem solving