8 years & up. Explore alternative energy and discover the future of power! With the ECO Ten Transforming Science Kit, harness the sun or wind to build and operate 10 different working models. Learn about renewable energy by using solar power, wind power or a generator to construct models. No batteries required! Young engineers can engage in the ultimate transforming technology through STEM-based play. Buildable models include a Triceratops, Stegosaurus, Apatosaurus, Helicopter, Space Explorer, Robotic Ride, Space Fan, GoGo Vehicle, Energy Racer, and Wind Powered LED.