Primary and secondary information science as an engineering discipline, how to promote students' mastery of information science has become one of the most important topics in the research of information science. In this paper, the knowledge map is introduced to manage the knowledge of information science. The knowledge map of information Olympiad in primary and secondary schools is drawn by constructing the knowledge map model. It can help students understand knowledge correctly in the process of information overload by presenting the relationship between knowledge nodes, and it is used to organize and display the knowledge nodes and their relationships.

Abstract. Modern cognitive psychologists divided into two broad categories of knowledge: declarative knowledge and procedural knowledge, according to the psychological characteristics of learners in learning knowledge. Using the theory of knowledge classification to guide the teaching activities of informatics in primary and secondary schools, formulate teaching methods and strategies to meet the cognitive psychological characteristics of primary and middle school students, promote the better grasp of knowledge points, improve the programming ability of primary and middle school students, learning the effectiveness of learning, and then cultivate the innovative spirit of primary and secondary school students. In this study, we use knowledge classification theory to make some in-depth discussion on classroom teaching of different knowledge types of informatics in primary and secondary schools.