多少年来,“认真钻研教材,精心设计教学程序,以达到教学效果的最优化”一直是老师们努力追求的目标,也是每个教师提升教学艺术的基本途径。这本来无可厚非,但是,久而久之,教师多惟教材是从,从不越雷池半步。“在面对数学教材提供的素材时,我们应该常常思考这样一个问题:如何开发教材,让教学更加富有实效?”教材是教师教学 For many years, “careful study of teaching materials, careful design of teaching procedures, in order to achieve the optimization of teaching effectiveness” has always been the goal pursued by teachers, as well as the basic way for each teacher to improve teaching art. This would have been understandable, however, over time, teachers and more textbooks from, never more than half of the thunder. “In the face of the material provided by the math textbooks, we should often think about such a question: how to develop textbooks to make teaching more effective? ” The teaching material is the teaching of teachers