Each set of these circle shaped blocks contains several individual pieces which fit together like a tiered pyramid, to make a cylinder. Tieramid challenges the mind and sharpens many physiological skills such as: perceptual, fine motor, dexterity, visual and cognitive skills. Your child, or grandchild, will spend hours manipulating Tieramid Blocks. Adults can play puzzles games to keep those grey cell exercised or to use Tieramid as an entertaining way to promote quality family time. Once you open your set, the shapes you can make are as endless as your imagination!