These transparent, durable plastic shapes may be filled with colored water, rice or sand to illustrate volume relationships by pouring from one to another. Set consists of all the consistently used "regular" shapes and serves to familiarize the student with the descriptive terminology. All are clear plastic and the square pyramid, short cylinder, cube, cone, and hemisphere have colored bases. The sphere is 10 cm diameter; the cone, hemisphere and short cylinder are each 12 cm diameter, and have altitudes equal to their base radii. The cube and square pyramid are each 10 cm high. he other eight are all 15 cm high, and matching pairs have congruent bases. In a rigid padded plastic carrying case with handle, for storage and protection.