Recipient of the iParenting Media "Best Product" award, this is the construction set that teaches kids the basics of hydrodynamics as they build working models of a plastics plant, oil refinery, and ice cream factory, or erect their own designs. Clear plastic pipes, siphons, and tanks allow children to watch the physics of fluids in motion, and the turbine velocity meter, tilt scale, and other flow rate control systems teach the interdependence of mechanisms. The set includes 300 1:87 scale pieces, including an electric pump, float valve, ball flow meter, and stop valves that children connect according to the detailed, easy-to-follow schematics. Aspiring hydrodynamicists will learn how siphons work, the difference between vented and unvented tanks, and see the effects of gravity, force, and pressure on their projects. Using the plastic girders, children build structures to support their replica industrial factories, and all projects are built in a tray to contain spills. Includes removable signs for labeling each working system. Pump plugs into AC. Ages 10 and up. 18" H x 12" W x 4" D. (6 lbs.)