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Home > Wen Yuan (Middle School Edition) > 2019 No.03 > 让量感在体验中形成,在推算中加深——以"平方千米"为例

  • 让量感在体验中形成,在推算中加深——以"平方千米"为例

    Author(s)：

    李嫔

    Publication Title：

    Wen Yuan (Middle School Edition) 2019 No.03

    Affiliations：

    上海市静安区彭浦新村第一小学 上海 200435

    Abstract：

    量感是指不使用测量工具对某个量的大小进行推断或推断用某个单位表示的量与哪个实际物体的大小相吻合的一种感觉.在小学数学教学中,"量感"的建立往往需要学生在想象、感知、体验、猜测、验证中形成."平方千米"的教学是基于已有知识,与实际生活关联,帮助学生建立"量感".本堂课,教师运用了"以小见大"的数学推理方法,加深了数学模型的建构.引导学生在"虚感知"与"实体验"间架起数学学习的桥梁.

    Keywords：

    量感;体验;推算;加深

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    [1] 李嫔.让量感在体验中形成,在推算中加深——以"平方千米"为例[J].Wen Yuan (Middle School Edition),2019(03),.

文渊(中学版)
Wen Yuan (Middle School Edition)

Language: 中文

CN：11-9275/G

ISSN：2096-627X

Publication Frequency: 月刊

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