Oh how we love our Solar Educational Kits! Why? Not only do they keep the kids occupied for hours but they also provide a hands on experience in the world of solar power. This kit includes all the parts needed to construct up to six different projects of their choosing. Choose between a robot, helicopter, plane, windmill, airboat or even a three wheeler! Don't even worry about screws, everything snaps together for easy assembly and its all solar powered so no batteries are required. For the best results, use it in direct sunlight. For cloudy days use a 50W halogen light.