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哈佛大学有一句名言:“教育的真正目的是让人们不断地提出问题和思考问题。”这里的问题并非一般意义上的习题、考题,它不仅包括教师精心设计的问题,也包括学生经过思考而提出的有数学思维的问题。笔者有幸公开执教“认识小数”一课,从核心问题“什么是小数?”统领下寻找可行的小问题,形成一条鲜明的主线。片段1:理想很丰满,现实很骨感课前小研究:如果把长方形看成1元。你会分一分、涂一涂,表示0.2元吗?你还会分一分、涂一涂,表示其他的零点几元吗?学生说我把它平均分成十份,涂了其中的2份。问
Harvard University has a famous saying: “The real purpose of education is to allow people to constantly ask questions and think questions. ” The problem here is not a general exercise, test questions, which includes not only well-designed teachers, but also students Thinking and put forward the question of mathematical thinking. I was fortunate enough to openly co-teach a lesson on “Understanding Decimals” and find a viable little issue under the guidance of the core issue of “What is a Decimal?” To form a distinct main line. Fragment 1: the ideal is full, the reality is very bony Pre-class small study: If the rectangle as 1 yuan. You will score a point, painted a Tu, said 0.2 yuan? You will be divided, painted a Tu, said the other zero a few dollars? Student said I divided it evenly into ten, painted two of them . ask