The essence of mathematics classroom teaching in primary schools is cognition, exploration and application. Representation is a two-way interaction, that is, teachers' teaching and students' learning. Specifically, it includes the process of putting forward problems, determining strategic approaches to solve problems, and establishing models (physical demonstrations, schematic diagrams, circuit diagrams, etc.). ), explore with teachers and students, draw scientific conclusions, use what you have learned to solve practical problems and put forward new mathematical problems. This series of teaching activities will always be for students, so that students can change from vague to clear, from unfamiliar to familiar, never have a meeting and never learn.

How to grasp? It should be expounded from a psychological point of view. The cognitive characteristics of primary school students are curiosity, hyperactivity, conformity, superficiality, forgetfulness, inattention and lack of persistence. As the chief designer of the activity, teachers need to carry out high-quality and efficient teaching design according to the above characteristics, such as choosing exaggerated cartoon shapes as teaching AIDS, bright colors (which have great influence on vision), allowing students to operate more, introducing speculation (mobilizing initiative), guiding and encouraging students to think deeply, and putting a new knowledge point into a larger scope.