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近来,我听了同一教材不同教法的两节算术课。课题是:小数乘以小数,例题是:加工1吨大米约要稻谷1.4吨,要加工0.8吨大米约要多少稻谷?听后启发很大。有一位老师,首先让学生回答了整数乘以小数应怎样计算的问题后,接着揭示了例题,引导学生列出算式(1.4吨×0.8),随即进行如下谈话。教师:这是什么乘法?学生:小数乘以小数。教
Recently, I listened to two math classes of the same textbook and different teachings. Questions are: decimal multiplied decimal, example is: processing 1 tons of rice about 1.4 tons of rice, to process 0.8 tons of rice about how much rice? After listening to a great inspiration. A teacher, first of all asked the students to answer the question of how to multiply integers by decimals. Then they revealed the examples and guided the students to formulate the formula (1.4 tons × 0.8). The following conversations were made. Teacher: What is multiplication? Student: Fraction multiplied by decimal. teach