The principle of "learning by doing" can be found in Dewey's philosophy and psychology. Dewey believes that "doing" is the main instinct of human beings. Children are born with a desire to do and work, and have a strong interest in activities or work, while other instincts can be fully reflected and developed in the process of "doing". Dewey pointed out that it is necessary to follow the natural way of children's instinctive development and gain experience, and provide children with a considerable environment in school for students to learn by doing things. He believes that through "learning by doing" and a large number of practical activities and sports activities, children's observation, imagination, creativity, problem-solving ability and practical operation ability can be cultivated and developed, and even their moral concepts can be cultivated. In Dewey's view, simple preaching is not completely effective in cultivating moral concepts, and children can acquire moral concepts through various social activities.