For every mathematics educator, the pursuit of efficient mathematics classroom has always been an enduring topic. In the teaching process, the effective way to reduce students' schoolwork burden is actually to improve the efficiency of mathematics classroom. So, how to improve the efficiency of mathematics classroom teaching? In addition to appropriate teaching methods, we should also attach importance to the development and utilization of teaching AIDS for mathematics majors and use them as much as possible in classroom teaching. This paper analyzes the use of underlined keywords in blackboard writing, chalk, multimedia tools, real physical cards and correct use in practical activities, hoping to have certain reference value for primary school mathematics teachers to improve teaching efficiency. ……