新教材不再归纳、呈现计算法则,课堂上要不要总结法则、再给出法则,已成为一线教师关注的话题。笔者认为,法则永远具有传承性,课堂上学生能理解法则、掌握法则,当然是件好事,关键是学生是以何种形式来掌握的,教师是如何适时适度地把握算法的抽象和概括时机的。美国教育家布鲁纳认为,儿童再现客观现实及认识事物 New textbooks are no longer summarized, showing the law of calculation, the class should not summarize the law, and then give the law has become a topic of concern to front-line teachers. The author believes that the law will always have the inheritance. In class, the students can understand the law and grasp the law. Of course it is a good thing. The key is how students master the form. How can the teacher grasp the abstraction and summarization of the algorithm timely and appropriately? . Bruner, an American educator, believes that children reproduce objective reality and know things