一般地说,分数除以整数的计算法则,学生较易理解,而对于一个数除以分数的计算法则,多数学生感到抽象难懂。怎样来推导一个数除以分数的计算法则,才能使学生比较容易理解并掌握它呢?这里,笔者提出一个教学设想。 In general, students are more likely to understand the rules of dividing scores by integers, while most students find it abstract and difficult to understand for the calculation of a number divided by the number of scores. How to derive a number divided by the score of the law of calculation, in order to enable students to more easily understand and master it? Here, I proposed a teaching idea.