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教学内容:人教版数学三年级下册第五单元第61页例2。片段一:直观操作,体会面积单位产生的意义1.出示两个面积悬殊较大的长方形。师:请大家快速比较两个长方形的面积,说说你是怎么比较的。生:一眼就可以看出它们的大小。
Teaching content: PEP mathematics third grade volume fifth unit p. 61 Example 2. Fragment one: Intuitive operation, experience the significance of the area unit 1. Produce a large rectangle of two large disparities. Teacher: Please quickly compare the two rectangular area, talk about how you compare. Students: One can see their size.