很多教师在教学中会遇到这样的问题,课堂上学生对于一些数学定义、定理、公式、法则已经初步掌握和理解了,可是一提起笔来做题,又感到茫然,不知从何下手,出现这种现象,究其原因还是学生没有真正理解定义、定理、公式、法则的本质,我们知道数学的定义、定理、公式、法则是数学知识体系的框架,是解题的基础,是推理的依据。因此,在我们的平时工作中, Many teachers encounter such problems in teaching. In the classroom, students have initially mastered and understood some mathematical definitions, theorems, formulas, and rules. However, when they lifted their pens to do the questions, they felt guilty that they did not know where to start. The reason for this phenomenon is that students do not really understand the essence of the definitions, theorems, formulas, and rules. We know that the definition of mathematics, theorems, formulas, and rules are the framework of the mathematical knowledge system, the foundation for problem solving, and the basis for reasoning. . Therefore, in our usual work,