* This clever Rover Robot rolls along on solar power when the sun is shining. It can be powered by battery when there is no sunlight! * Enhances childrens development in hand-eye coordination, creative thinking skills, engineering skills, construction skills, logical thinking and many more. * The Green Science Rover Robot teaches young engineers to use the principles of physics to build their own gadgets that really work. Kids are amazed with how everyday materials reveal the secrets of science and mechanics.