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我在一次讲作业时,讲到“a×1/5=b×1/3,那么a与b比较大小的结果是什么?”我直接利用了比例的基本性质,把它化成正比例,再来比较,也讲到了举例的方法,讲完之后习惯性地讲下面的题,这时有个男生蓦地站起来,脸憋得通红,不给我留半点时间抢着说(估计他当时怕我不给他机会)自己有不同的做法。生:我认为直接就可以把a假设成5,等式的左边的结果是1,右边的结果也要得1,那么b就直接是3了。(稍微停顿了一下,同时瞅了我一眼,接着说,但声音明显比刚才小了很多)
When I talk about my homework, I say “a × 1/5 = b × 1/3. What is the result of comparing the sizes of a and b?” "I directly used the basic nature of the ratio to make it proportional. Come to compare, but also talked about the method of example, after habitually speak the following questions, then there is a boy standing up, face flushed, do not give me the slightest time to grab (estimated he was afraid of me Do not give him a chance) have their own different ways. Health: I think you can directly assume that a is 5, the result on the left side of the equation is 1, and the result on the right side is 1, so b is 3 directly. (Paused for a moment, taking a look at me, then went on, but the voice was significantly smaller than just now)