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人教版《初一代数第一册(上)》第224页的例题是这样的:在甲处劳动的有27人,在乙处劳动的有19人.现在另调20人去支援,使在甲处的人数为在乙处的人数的2倍,应调往甲,乙两处各多少人?为了使学生受到更好的思维训练,并激发学习兴趣,我在教学中是这样处理的:一、改编例题,变“封闭”为“开放”.改编后的例题为:在甲处劳动的有26人,在乙处劳动的有19人,另有9人在树荫下休
The example on page 224 of the People’s Education Press “First Generation Number One Book (Part I)” is as follows: 27 people worked in Party A, and 19 worked in Party B. Now we adjust another 20 to support. The number of people at place A is 2 times the number at place B. How many people should be transferred to places A and B? In order to enable students to receive better thinking training and stimulate learning interest, I dealt with this in teaching. : First, rewrite example questions, change “closed” to “Open”. Adapted examples are: 26 people working in A, 19 people working in B, and 9 people in the shade Down