传统的数学教学,是教师教教材,学生学教材,最后就是考教材.新课程理念下,教材版本多样化,编排体系各不同,那么新形势下,我们应该如何去教学生呢?笔者通过实践认识到,教学中应该以教材为基础,挖掘教材,拓展教材,只有这样,才能更好地利用教材.下面以人教版九年级“旋转”为例,加以说明.按照旧教材的教法,本节课内容学生很容易接受.但是,按照新课程理念,教材越简单,越应该挖掘教材,拓展教材.为此,笔者作 The traditional mathematics teaching is the teacher teaching materials, the student learning teaching materials, and finally the examination textbooks. Under the new curriculum concept, the textbook version is diversified and the arrangement system is different. Under the new situation, how should we teach students? Recognizing that teaching should be based on teaching materials, excavate teaching materials, and expand teaching materials. Only in this way can we make better use of the teaching materials. The following is an example of the 9th grade “rotation” of the People’s Education Press. Law, the content of this lesson is very easy for students to accept. However, according to the concept of the new curriculum, the simpler the textbook is, the more the textbook should be tapped to expand the textbook. To this end, the author made