Powered by The Sun/BatteryThe stem robot kit can be powered by the sun or battery (included).There is a solar panel included that transforms the solar energy into electric energy, which drives the wheel and makes the robot run. Educational STEM LearningOur building robots toy will promote your children's hand-eye coordination and creativity, enable children to use their infinite imagination to complete assembly and enjoy countless hours of fun.Having fun at the same time, let your child learn in play STEM Projects for Kids Ages 8-12 This scientific solar building robot toy helps children learn about the simple rules of robotics and mechanical operation.Involves simple science, technology, engineering, and math skills, while also exercising children's hands-on and problem-solving skills, improving logical thinking and self-confidence, and also developing children's teamwork skills. Build for CreationEnrich the creative thinking of your child with the challenges of building their own robot.With the simple-to-follow blueprints included, it is easy for 8+ years old boys and girls to build various robots by following the instructions step by step. What You GetAll pieces are sturdy and durable, which are made of premium quality ABS plastic.Ideal gift for birthday/Childrens Day/Christmas/Easter/summer camp activities/back to school.You can imagine the boy's joy of getting a solar robot toy and the seriousness of getting into the STEM building game, let us prepare a surprise for your child.