一、问题对于分数,五年级学生已不感陌生,在人教版数学教材三年级上册中就已涉及,他们知道把一块月饼平均分成两份,每份就是这块月饼的一半,也就是二分之一,写作12。但为什么这样,也只知其然而不知其所以然。要让学生从根本上理解问题、掌握重点、突破难点,实现知识迁移,还需要智慧的课堂来完成。(一)教之困1.在分数意义的教学中,讲 First, the problem for the score, fifth grade students have no stranger to the third edition of the textbooks in the PEP teaching have been involved, they know that an average of one moon cake is divided into two, each is half of the moon cake, which is two points One, writing 12. But why is this, but only know it but I do not know why. To enable students to fundamentally understand the problem, grasp the key points, break through the difficulties, to achieve knowledge transfer, but also need to complete the classroom wisdom. (A) to teach the storm 1. In the meaning of teaching, speaking