I think a good math class should first look at the degree of achievement of the course objectives and basically complete the teaching outline tasks. Secondly, considering that it is a primary school course, the teacher's explanation should be easy to understand so that students can accept it better, and it is relatively lively and interesting so that students are not easily distracted. Considering that it is a math class, we should pay attention to the rhythm and guide students to think. Pay attention to connectivity, new knowledge should be based on existing knowledge, always pay attention to students' listening, consolidate classroom exercises in time, and answer students' doubts.