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分数既可以表示两个量的关系(“率”),也可以表示一个具体数量(“量”)。小学阶段,掌握分数的两种含义,对于深刻理解和掌握分数和百分数概念、灵活地解决相关问题都有重要意义,因此在教学中应重视区分分数的两种意义。但一个不争的事实是,学生往往对分数的意义在运用时犯迷糊,解决问题张冠李戴,无所适从。一、通过练习,关注错误学生在学习“部分与整体的关系”时,做单一的“把3米长的绳子平均分成4段,每段占全长的几分之几?”这类题,正确率较
The score can represent the relationship between two quantities ( “rate ”) or a specific quantity ( “quantity ”). In primary school, mastering the two meanings of scores is of great significance for understanding and grasping the concepts of scores and percentages flexibly for solving related problems. Therefore, two meanings of distinguishing scores should be emphasized in teaching. However, an indisputable fact is that students tend to confuse the meaning of the score when used, to solve the problem Zhang Gui Li Dai, know what to do. First, through practice, concerned about mistakes Students learn “part of the relationship with the whole”, to do a single "The 3-meter-long rope is divided into four segments, each of the total length of a few? Question, the correct rate