从七年级、八年级数学课本当中的练习题出发,引出两道中考题,剖析牵涉到的知识点,寻找解题关键,将中考题回归教材,分析题意,寻找基本图形,回忆课本上关于这一部分知识是如何讲解的,观察这个图与基本图形之间的异同点,以教材为理论依据,将问题逐次展开,一层层解决。 Starting from the exercises in seventh grade and eighth grade mathematics textbooks, we can get two questions of senior high school entrance examination, analyze the involved points, find out the key points, return the test questions to the textbooks, analyze the questions and look for the basic graphics, Part of the knowledge is how to explain, observe the similarities and differences between this figure and the basic graphics, teaching materials as a theoretical basis, the problem one after another to start, layer by layer.