Provide exciting and educational activities for your early learning or home environment with the ECR4Kids Manipulative Mania - Set 1. Children will challenge themselves to construct sky scrapers, animals, and more with the four different manipulative collections. Sets encourage the development of hand-eye coordination, motor and basic math skills. Each group of manipulatives is packaged in a clear tub with convenient lid and handle that stack to save space. Manipulative Mania - Set 1 is comprised of the following: Silly Star Connectors (ELR-19201): 116 pieces, 3D Building Blocks (ELR-19202): 84 pieces, Criss-Cross Connectors (ELR-19203): 400 pieces, and Totally Tubular Pipes and Spouts (ELR-19204): 80 Pieces.