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    沈东波主页 >> 文章 >> 交流研究 >> 浏览信息《这样的题目弄得没辙》

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    星期二   晴天 
    主题 这样的题目弄得没辙

    今天重点解决学生关于数位、计数单位运用的问题,始终紧扣数位顺序表,效果还可以。
    但对于在数轴上表示小数,我感到挺头疼,一是这类题目要求有图,并且这个图还要求尽量准确,讲起来才顺手,但学校没有班班多媒体,一个楼层只有一个小推车,用起来方便。这是还是感到多媒体好,讲起来直观,要是白板就更方便了。二是学生始终闹不明白该是用几位数表示。这要看0到1被平均分成了几份,这样的图又分为两种,一种是平均分成10份的,一种是把0到0.1平均分成10份的,其实0到被平均分成了100份。这些东西一绕,大部分学生填的太乱了。真恨不得手把手教。
    沈东波 发表于:2011-9-27 21:51:21

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