|Address||P.O. Box 219 Batavia, IL 60510|
Challenge students to determine the composition of 12 different-sized rods, each one made of a different material. Students exercise their measurement skills with mass, length and volume determinations as they problem-solve to identify each material. Durable rods are made of various familiar woods, metals and plastics and are designed to withstand years of student use. The large size ensures more accurate measurements. Set contains a sturdy storage base.