苏科版初中数学教材中有不同阶段解决同一个问题的地方,当然内容、要求都有不同,如何在教学中把握不同阶段知识尺度的定位,如何能把它们有机的整合在一起,需要我们去思考和探索。笔者在初中几何的教学过程中对角平分线概念教学进行了一些探索,希望能帮助教师和学生更好的把握各阶段的尺度要求。 There are different stages in solving the same problem in the junior high school mathematics textbooks of Suoke. Of course, the contents and requirements are different. How to grasp the orientation of knowledge scale in different stages in teaching and how to integrate them organically requires us to Think and explore. The author explored the teaching of the concept of diagonal bisector in the teaching process of junior high school geometry, hoping to help teachers and students to better grasp the standard requirements of each stage.