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在一次课堂教学研讨活动,观摩了“小数的初步认识”一课(人教版三年级下册),教学中的一个环节让执教老师有点尴尬。下面是这个环节的教学实录:老师出示一个1元硬币,问:取其中的0.1元,怎么拿?生1:把这个硬币平均分成10份,取其中1份。生2(质疑):这个硬币怎么能平均分呢,不会切开来吧!显然生2的回答很合老师意,于是老师马上顺着说:是哟,不会把这个硬币一块一块地切下来吧!(很多学生都把刚才举起的小手放下,看来学生都很认同)生3:我知道了!可以把1元硬币换成10个1角,
In a classroom teaching seminar, observe the “preliminary understanding of decimals,” a lesson (PEP 3 third grade), a link in teaching so that the coaching teacher a bit awkward. The following is a teaching record of this session: The teacher presents a coin of RMB1 and asks: Take one of the RMB0.1, how to get it? Student1: Divide the coin into 10 shares on average and take 1 of them. Students 2 (question): How can the average share of this coin, it will not cut it! Obviously the answer to students 2 is very close to the teacher, so the teacher immediately said: Yeah, this coin will not be cut together piece by piece Down! (Many students have just put up the little hand down, it seems that students agree) Health 3: I know! Can be 1 yuan coin into 10 1 corner,