The colorful gel-filled (non-toxic) shapes are fun to squish — employing focus, attention, fine motor coordination and spatial relationship practice. They can be used to develop hand-eye coordination, dexterity and finger strength. The Tangram Set is great to be used as a game, stimulates creativity, teaches color recognition and geometric shapes. It keeps both minds and fingers busy! It includes all seven shapes of a tangram puzzle that can be put together to form thousands of designs. Complete puzzle size: 16x16cm.