Designed to let children create any construction and find their own solutions to structural problems. Develops spatial management skills through engaging in play. Every stage in a child's development benefits from these blocks. Young children begin by arranging and matching the pieces, which helps them maintain the required hand-grip strength and become aware of spatial relationships. Then towers and more complex building structures are made. Older children are able to problem solve, grasp some basic rules of physics so they can balance their building constructions, and have a well-developed spatial imagination. 166 wooden pieces, includes 74 blocks (5cm x 4cm), 50 sticks (4cmL), 28 large flats (20cm x 10cm) and 14 medium flats (10cm). 3yrs+.