KidWind Small Water Pump with Tubing, Recommended for College and High School, to demonstrate power output from the wind and solar kit, makes comparing different turbine designs easy; simply measure how high different turbines can pump water using this mini pump
KidWind Solar Thermal Exploration Kit, modeled after a domestic solar water-heating system. Explore variables such as box color, light intensity, tube design, rate of water pumping, and amount of time it takes to heat the water