小学数学第十册第二单元“数的整除”概念比较多,使学生理解概念之间的内在联系和差异,难度较大。如何使学生更好地掌握这部分内容,下面提几点建议: 一、明确教材内容之间的联系,把握本单元的重点,突破难点。 本单元教学是在学生学过整数的认识和整数四则运算的基础上进行的,是为分数的约分、通分,判断是否是最简分数作准备的,同时,也是为最大公约,最小公倍数的应用打好基础。本单元分为五个小节,可归纳为三部分内容,一、二节是第一部分,第三节是第二部分,四、五节是第三部分。部分之间存在着既独立又互相联系的关系。如:要让 The second unit of elementary school mathematics tenth “divisibility” concept is more, so that students understand the concept of the internal relations and differences, more difficult. How to enable students to better grasp this part of the content, make the following suggestions: First, a clear textbook linkages, grasp the focus of this unit, breaking the difficulties. This unit teaching is based on the students' knowledge of integer and the arithmetic of four integers. It is for the fractional points, pass points, to determine whether the most simple fraction to prepare, but also for the greatest convention, the least common multiple The application of laying a good foundation. The unit is divided into five sections, can be summarized into three parts, one or two is the first part, the third is the second part, four, five is the third part. Part of the existence of both independent and interrelated relationship. Such as: to let