“分数乘以整数”这一节的教学,要解决两个问题,一是分数乘以整数的意义,二是它的计算方法。而“方法”又是在理解“意义”的基础上解决的,因此,使学生理解“意义”是教学的关键。下面就这节教材的教学谈几点建议。一、利用知识正迁移讲清“意义”教材一开始就指出:“分数乘以整数的意义与整数乘法的意义相同,就是求几个相同加数的和的简便运算。”学生是在学习了整数乘法及分数加减法以后来学习分数乘法的。因此在这里可充分利用 The teaching of the section “Multiplying fractions by integers” solves two problems, one is the fraction multiplied by the meaning of an integer, and the other is how it is calculated. However, “method” is solved on the basis of comprehending “meaning”. Therefore, making students understand “meaning” is the key to teaching. Here's a few suggestions for teaching this textbook. First, the use of knowledge is to migrate clear “meaning” textbook from the very beginning pointed out: “The meaning of fractions multiplied by integers with the same meaning of integer multiplication, is to seek a few simple sum of the same addendum.” Students are learning Integer multiplication and fractional addition and subtraction later to learn fractional multiplication. Therefore, it can be fully utilized here