This set includes 12 shatterproof 3D solids: sphere, hemisphere, cylinder, cube, rectangular prism, triangular prism, pentagonal prism, hexagonal prism, cone, square pyramid, triangular pyramid and pentagonal pyramid. These shapes feature 6 different translucent colors: red, orange, yellow, green, blue and purple. Fill the shapes with liquid or solid materials to compare volumes of different solids with the same height. The removable stoppers prevent spills during play. This set demonstrates a variety of STEM concepts such as measurement, volume, capacity and surface area. These manipulatives are ideal for sensory play while children explore colors, shadows and light on a light panel. Made of shatterproof plastic, these manipulatives are ideal for classroom learning. The set is packaged in a sturdy box with cardboard sorting tray to keep the shapes in place. Size of shape bases: 3.1". For ages 3+.