Almost every form of energy used by humans originates as energy from the sun—give students a hands-on lesson on its importance by constructing 5 solar-powered models! A moon rover, stag beetle, praying mantis, solar-bot, and helicopter provide an interactive lesson on how solar cells transform light into energy and how vehicles use this energy to complete daily tasks. Using solar power also teaches the importance of using environmentally-friendly power. All models can run on batteries (not included) to ensure use in all lighting conditions. Kit includes 142 pieces and a 48-page instruction manual. Recommended for Elementary and up.