Mathematical communication and cooperation are very important in learning, especially the expression of mathematical ideas. I think the most intuitive thing is language. Only when teachers' teaching language reaches a certain level can we guide them. It is very important to teach students to learn to express, be good at expressing and be brave in expressing. Learning to express is very active. Correctly expressing one's thoughts and communicating with peers are conducive to understanding, accepting and digesting knowledge. Therefore, teachers should strive to improve their language art, and now they should improve the language art in mathematics classroom and talk about their personal understanding and experience.

Language is the direct embodiment of teaching ideas and the most widely used and basic information carrier for teachers. Mathematics classroom teaching process is the transfer process of mathematics knowledge. In the whole classroom teaching process, the transfer of mathematical knowledge, the feedback of students' acceptance of knowledge and the emotional communication between teachers and students must rely on mathematical language. The way and quality of teachers' language expression directly affect students' acceptance of knowledge, and the emotion of teachers' language triggers students' emotion, so we say that teachers' language art is the core of classroom teaching art.

Some people say that teaching is both science and art, which is true, because classroom teaching should not only rely on the guidance of scientific theory, but also pay attention to the art of communicating with people. After all, teaching is not something that teachers can accomplish by their own wishful thinking, but a bilateral activity of teacher-student interaction. This requires teachers to have certain classroom scheduling ability, so, specifically, it mainly includes: (l) the ability to design mathematics teaching. Primary school math teachers should fully understand the students before class, understand the students' mathematical knowledge base, the different needs of mathematics learning and the emotional state of mathematics learning. At the same time, it is necessary to analyze teaching materials, process teaching contents and develop curriculum resources, choose appropriate teaching modes, and arrange students to participate in certain mathematics activities. (2) Teachers should have the wisdom and ability to create a good learning atmosphere. Students are the masters of learning. Traditional teaching methods should be changed from teachers explaining examples and students imitating exercises to teachers guiding students to participate in mathematics activities and students asking questions to solve problems themselves. In this way, teachers' responsibility mainly lies in creating a good learning atmosphere for students. A good learning atmosphere is based on a democratic and equal relationship between teachers and students. Therefore, teachers are required to respect, love and understand students, treat students fairly, actively communicate and cooperate with students, and flexibly and tactfully solve contradictions with students.