在数学课堂教学中,多媒体课件的有效使用能够帮助学生理解并建构数学知识,支持学生对知识的理解,为师生交互作用的发挥提供物质基础。同时我们应当看到,不同主体的不同数学教学设计,不同使用方式和出示时机,常使得即使相同 In mathematics classroom teaching, the effective use of multimedia courseware can help students understand and construct mathematical knowledge, support students’ understanding of knowledge, and provide the material basis for the interaction between teachers and students. At the same time, we should see that the different subjects of different mathematics teaching design, different ways of use and presentation time, often makes the same