This is a science and education product of power generation teaching combination set. It can help children learn the concept of clean energy, and learn the principle of power generation and storage by cutting magnetic line of force. Let children learn how to convert mechanical energy into electrical energy, how to store electrical energy, and how to convert electrical energy into mechanical energy. Through the study and practice, we can systematically and comprehensively master the laws of energy conversion and conservation. It can be said that a small generator can make a future inventor. Help to cultivate children’s hands-on brain ability and creativity.