His theory changed the way people perceived children's behaviors and inspired other researchers to study this area, which improved the understanding of cognitive development during childhood and adolescence. More importantly, people have learned to understand and communicate with children and adolescents based on his ideas, which greatly contributes to the development of education. Teachers should get children to pay attention to the learning process rather than the results. Children and adolescents should also be encouraged to work individually or in groups. The evaluation of the student's cognitive level is also important in order to assign