五年制数学第九册第一单元中的带分数乘法是学生在学习了假分数、带分数互化、分数乘以整数和一个数乘以分数的基础上教学的,也是这些知识的综合。这节知识上升弧度不大,学起来不难,可以通过“练习旧知、综合旧知、自学新知”的程序进行教 The fractional multiplication in Module I of the five-year math book, Volume 9, is a combination of these learnings based on teaching students on the basis of learning fake scores, taking scores together, fractional numbers multiplied by integers, and a number times the fraction. This section of knowledge is not a small increase in the arc, it is not difficult to learn, you can “practice the old knowledge, comprehensive knowledge of the old self-learning,” the program to teach