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笔者在教学二年级“乘法”练习时,遇到这样一道综合题:学校艺术节,小朋友们排成整齐的队伍表演体操,从前面数,小红排在第2个,从后面数小红排在第5个,小红的左边有7位小朋友,右边有1位小朋友,参加表演的一共有多少位小朋友?应该说这是一道综合性较强的练习,题目中涉及前后、左右、序数、基数、乘法等多个知识点,解决这类问题对低段学生来说具有一定挑战性;当然解题中师生和生生的思维互动过程是非常有价值的,它能有效促进学生思维发展。
In the teaching of the second grade “multiplication ” practice, encountered such a comprehensive question: School Arts Festival, children neatly arranged team performance gymnastics, from the front, the red row in the second, from the back a few small Red row in the first five, red left there are seven children, the right there is a little kid, to participate in the performance of a total of how many children? It should be said that this is a comprehensive exercise, the subject involves before and after, about, Ordinal number, multiplication and other knowledge points, to solve such problems for low-level students has a certain challenge; of course, problem-solving teacher and student interaction in the process of thinking and thinking is very valuable, it can effectively promote the students thinking development of.