“分数的基本性质”是分数知识中比较重要的一个知识点,在教学中起着承上启下的作用。苏教版教材对此知识点的编排与原人教版教材基本相同,只是更加重视知识间的联系。我们对教材进行分析后,本着让学生自主探究、亲历体验知识形成过程的理念对此课进行了预设。大致思路是:激趣导入——猜想——验证——应 “The basic nature of the score ” is a more important point in knowledge of knowledge, plays a role in teaching. The textbooks of the Supian textbook are basically the same as those of the textbook of the original textbooks of the PEP, except that they attach more importance to the connection between the knowledge. After analyzing the teaching materials, we pre-designed this lesson based on the concept of allowing students to explore and experience the process of forming knowledge. The general idea is: fun import - guess - validation - should