Transparent, 3-D plastic shapes in bold, bright colors! This selection of common geometric shapes offers a concrete way to explore geometry, volume and other measurement concepts. Allows students to relate 2-D shapes to 3-D solids by examining and comparing the removable bases. Includes large and small cubes, large and small rectangles, pentagonal prism, large and small triangular prisms, square pyramid, triangular pyramid, large and small cylinders, cone, sphere, and hemisphere. Fill with liquid or dry-fill for studies of volume. Cleans easily. Durable plastic shapes measure 3 cm or 6 cm. Activity Guide includes formulas and intervention strategies. Grades 3+.