See for yourself how a generator works with this hands-on alternative energy kit.\n\nUse this kit to build a 5 inch windmill generator with an LED light-bulb. This windmill generator can be used in or outdoors. Just provide a recycled soda bottle.\n\nInstructions and a renewable energy fun facts pamphlet are included. Encourages children to explore, understand and be inspired by the world of science, technology, engineering and maths. Learn about renewable energy.\n\nContents: \n\nContains 1 rotor, 1 front-housing with gear and rotor shaft installed, 1 back housing, 1 tail, 2 half screw caps, 1 toy motor with gear (generator), 1 motor cover, 8 small screws, 1 LED with wires and detailed instructions. \n\nAlso required, but not included in the kit: \n\nA small crosshead screwdriver and a clean soda bottle. The diameter of the assembled rotor is 14cm\n\nAbout the range:\n\n-Green Science teaches the principles of renewable energy and encourages children to build a cool, clean.