Geofix is a construction system for creating 2-D and 3-D models. The shapes are made of tough, flexible polycarbonate with clip hinges that snap together easily. Nets can be put together and folded up to form a geometric model. This 50 piece set contains: 32 equilateral triangles, 6 squares, 12 pentagons. Builds tetrahedron, cube, octahedron, dodecahedron, and icosahedron. Includes instructions. Gr. 2-12.