Magna-Tiles are a massive hit with kids and teachers alike. The inspiring blocks encourage geometric thinking and spatial reasoning though open-ended creative play and exploration. This colorful set is composed of tactile, translucent shapes that â€œsnap" into place with the help of powerful magnets. Use this starter set to create flat or 3D structures while developing patterning, shape recognition, and motor skills. Each shape measures approximate 3" per base side.