小学科学《用水测量时间》教学反思
这次小编给大家整理了小学科学《用水测量时间》教学反思,本文共12篇,供大家阅读参考,也相信能帮助到您。 在前两课,学生感受了时间存在及流逝,了解了一些时钟发明之前的计时方法,并制作了太阳钟,发现了太阳钟的弊端。这课也是《做一个水钟的》的前期准备,旨在激发兴趣,奠定理论基础。本课教学重点是:理解怎样用流水来制作成计时工具,了解各种水钟的制作原理。难点是:理解水钟的制作原理,也就是水流大小、水位高低对
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