[教材简析]“间隔排列”是苏教版小学数学三年级上册安排的“探索规律”领域的内容。从教材编排看,为了凸显“探索规律”的教学价值,落实“四基”要求,苏教版小学数学教科书从三年级上册起,每册都编排一个“探索规律”的专题内容。“探索规律”重在“探索”。教材通过每册这样的专题内容,目的是让学生经历探索和发现规律的过程,并在此过程中体会由具体到抽象、由特殊到一般的过程,重视探索规律的经验积累和数学思想方法的感悟。本节课的教学内容主要引导学生认识规律现 [Textbook analysis] “interval arrangement ” is the content of “exploration law ” field arranged in the third grade of the Sujiao version of elementary school mathematics. In order to highlight the teaching value of “exploring the law” and implementing the “four bases” requirement, the textbooks of the primary school of the Sujiao version are to be published in the third grade. Each book is arranged with an “exploration rule” Thematic content. “Exploring the law ” focuses on “exploration ”. The material passed through each of these thematic contents is intended to allow students to experience the process of exploration and discovery of the law, and in the process of understanding from the specific to abstract, from the special to the general process, emphasis on the accumulation of experience and the mathematical method of thinking and thinking Sentiment The teaching content of this lesson mainly guides students to understand the law