ENCOURAGES FREE PLAY: Learn to sort, count, categorize and construct! Invite children to imaginatively free play with block construction. With their open-ended style, PlanToys' Hollow Blocks serve as a great addition to all playtime activities. SUPPORTS DEVELOPMENT: Enhance fine motor skills, hand-eye coordination and creative-thinking skills during play. Additionally, watch communication and social skills develop as little ones play and interact with others while building. INCLUDES: 10 sustainably-colored wooden blocks with 5 different shapes: small cubes, large hollow square blocks, rectangular blocks, large hollow rectangular blocks and hollow right-angled blocks. Suitable for children 3 years and older.