Density Blocks, Set of 10.

These 10 one-inch cubes can be used in many experiments. What makes this kit unusual? It includes a range of materials we actually use today. Learn about density, mass, volume, buoyancy, specific gravity and flotation using real building materials. Includes ten cubes (aluminum, copper, nylon, PVC, steel, acrylic, pine, brass, oak and poplar), instructions, and a handy storage case.