学生的知识积累是一个分阶段的渐进过程,由于时间跨度长,遗忘是必然现象;同时,在新课学习中,学生积累的知识之间的相互联系并不丰富,学生头脑中知识的结构化、系统化水平低,难以系统记忆,容易在运用知识时提取困难,而影响数学问题的解决。因此,复习课承载着回顾与整理、沟通与生长的独特功能,在整个教学活动中处于承前启后的重要一环。 Students ’accumulation of knowledge is a gradual and gradual process. Because of the long time span, forgetting is an inevitable phenomenon. At the same time, in the new lesson learning, students’ accumulated knowledge is not interrelated, and the structured knowledge in the minds of students , The low level of systematization, the difficulty of systematic memory, the difficulty of extracting knowledge easily, and the solution of mathematical problems. Therefore, the review class carries the unique function of reviewing, organizing, communicating and growing, which is an important part of the whole teaching activity.