Create your own dynamo machine with this green science kit by 4M! Dynamo Circuit Board Green Science Kit includes everything your young scientist needs to explore how a dynamo is used to create electricity. Assemble a hand generated dynamo motor and experiment with different projects that are empowered by the dynamo circuit board. Build a propeller racer, light up your own robot, make a helicopter move, energize a flashlight, and learn about electricity. Dynamo Circuit Board Green Science Kit lets children explore the power of clean energy and experiment with physics.