Through investigation and analysis, we can understand the representation methods and characteristics of large-class children in theme activities, promote the practice of children's teaching strategies using various representation methods, and thus improve their representation ability. Children are the protagonists of kindergartens. Therefore, we should always stand in the children's perspective, create an environment that children like and love, mobilize their accumulated feelings, stimulate their interest and promote their better study.

Representation is the reflection and existence of knowledge in individual psychology. According to the types of knowledge and its extraction methods, psychologists believe that human beings have at least four types of psychological representations: cognitive map, psychological image, schema and psychological language.

Representation refers to the way of recording or expressing information, a formal system that can clearly express some entities or certain types of information, and some rules that explain how the system performs its functions. Therefore, we can understand that representation refers to a symbol or signal that can refer to something, that is, when something does not exist, it is characterized.