3 years & up. The Hungry Caterpillar is ready to introduce this classic story iby Eric Carlle in a brand new form! 5 of the tiles can build a 3D Caterpillar while the opposite side of each tile has pictures to help re-tell the story. This set also features tiles with numbers 1 - 5 to introduce early counting skills. Encourage the development of story sequencing and creativity. Includes 16 tiles compatible with all Magna-Tile sets. Tiles measure 3"L x 3"W.