Giant GeoSolidsGiant GeoSolids make classroom demonstrations easy. Fill with water, sand or DryFill beads as you explore shapes, sizes and the relationships between area and volume. Base colors match the shape colors of Large Geometric Plastic Shapes (LER 0922). Maximize learning by using both! Shapes include cone, hemisphere, cube, cylinder, rectangular prism, hexagonal prism, triangular prism, square pyramid and triangular pyramid. Shapes measure approximately 6". Teaching Guide included.  . Grades 3+