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ALTERNATIVE ENERGY, CONTINUEDRenewable EnergyExplore critical science, technology and engineering concepts with renewable energy devices. Students discuss and evaluate ideas and designs, then construct devices powered by wind, water and solar energy. Reinforce concepts of energy storage, force, motion, work, radiant and mechanical energy, kinetic and potential energy and Newton’s laws. Includes 583 parts and comprehensive build-ing instructions in a convenient storage tray with snap-on lid.AP7836 I $225.30Wind-Powered GeneratorThis wind generator is a mini-research unit on wind power and windmill design. Comes with a lab manual with nine experiments about speed/voltage relationships, blade number and arrangement, maximum rpms and voltage, driveshaft ratios and wind speed effects that can be done inside or out. Generator has a weighted base, structural aluminum tower, wind-seeking tail assembly, removable fan blades and binding posts for electrical measurements.AP5107 I $302.15Biofuels—Flinn STEM Design Challenge™Students explore ethanol production through the fermentation of carbohydrates by yeast cells. The introductory activity is a controlled investigation of carbon dioxide produced through the fermentation of yeast with two different types of carbohydrates. From observations, students determine the most productive carbohydrate food source then design and implement a method to collect and quantify the carbon dioxide produced.AP8052 I $46.05Renewable Energy SetExplore wind, solar and water energy with three interchangeable power units mounted to a sturdy plastic base. Monitors can be connected to the base to make sounds, flash lights, turn gears or measure voltage to observe and measure the energy produced. High-impact plastic base is 7” x 10” with a maximum height of 20”, monitors are 3” in diameter. Includes 20 feet of clear plastic tubing and a packet with suggested activities and instructions.AP7819 I $225.95Build a Water Wheel—Flinn STEM Design Challenge™Students build an eight-bucket water wheel from provided materials then test it to collect data and make observations as the wheel turns and lifts a load. Students decide how to improve their design, considering size, shape and number of buckets, and test their improved water wheels to determine maximum power generated. The unique testing-station setup eliminates the need for hot glue and allows for easy modification of the water wheels.AP8050 I $51.20Wind Energy—Student Laboratory KitTo study the principles of using wind energy to produce mechanical power, students construct windmills with interchangeable fans of three and four blades. Use a portable fan to measure time required for the torque of the windmill shaft to lift a weight a given distance. Students can then determine the power produced from the different blade designs and calculate their efficiency. Includes Flinn Exclusive STEM Integration Guide.AP7512 I $43.95