Cube, Individual cubes for density experiments, Available in eight different materials: acrylic, aluminum, brass, copper, nylon, polypropylene, PVC, and steel, Each material is represented by a 1/2inch, 1inch and 11/2inch cube
Sail Car Activity single, Design and engineer a vehicle that is propelled by the wind, activity is perfect for early elementary, The Sail Car design allows students to quickly and easily experiment with sail shape, angle, and placement, furthest distance, travel the fastest