The theme of this topic is "How to improve the efficiency of mathematics classroom". Didn't the teacher teach you to find the answer in the question? So I think the purpose is to help students improve the efficiency of listening and speaking in math class, master the main points of knowledge in class more effectively, and let students form a complete framework system of what they have learned in math class in their minds after a math class, so as to better absorb and digest it after class. The significance is to help us master the skills of learning mathematics fundamentally and make us have a deeper and more comprehensive understanding of mathematics.