“用教材教”就是要在准确把握教材的基础上,创造性地使用教材,确立课程开发意识;就是要在保证基本要求的前提下,适当考虑学生发展的差异,合理开发和利用课程资源,选择具有一定弹性的素材,以满足学生的不同需求,使学生在数学上得到不同的发展。在一次课改示范展示课中,我指导昭阳区四小教师袁祥执教一节“平行四边形的面积”。当对教材进行了一番琢磨之后,我与袁老师尝试对教材中的两个素材进行了再创造,使 “Teaching materials ” is to use the teaching materials on the basis of accurate, creative use of teaching materials to establish awareness of curriculum development; is to ensure the basic requirements of the premise, due consideration to differences in student development, rational development and use of curriculum resources , Choose a certain flexibility of the material to meet the different needs of students so that students get different mathematical development. In a class demonstration demonstration class, I directed four teachers in Zhaoyang District Yuan Xiang coaching section “area of ​​parallelogram ”. When the materials were some pondering, I and Yuan teacher try to re-create two materials in the textbook so that