Overhead Folding Geometric ShapesDemonstrate geometric shapes in both 3D and 2D form. Aligns with NCTM Standards for geometry and measurement through coverage of visualization, spatial reasoning, geometric modeling, area, volume and surface area. 16-piece set includes cylinder, square, pyramid, cube, rectangular prism, triangular prism, cone, heaxagonal prism and triangular pyramid. Shapes measure approximately 1 1/4" each. Games/Manipulatives Type: Shape Manipulatives; Age Recommendation: Grades 2 and Up.