Giant GeoSolids make visual classroom demonstrations possible. Fill with water, sand or rice as you explore shapes, sizes and the relationships between area and volume. Shapes include: cone, sphere, hemisphere, cube, cylinder, rectangular prism, hexagonal prism, triangular prism, square pyramid and triangular pyramid. Teacher's Guide included.Details:MulticoloredGeoSolids make visual classroom demonstrations possibleExplore shapes, sizes and the relationships between area and volumeShapes are approximately 6"For ages 8 and up