《角的初步认识》教学反思

本节课我想通过“猜一猜”的小游戏,复习以前学过的平面图形和初步感受角也是数学中的平面图形。在教学新课中第一环节是通过找一找角,认识角各部分名称,知道一个顶点和两条直直的边组成的图形在数学上我们称为角,再找生活中的角。再辩一辩哪些是角,画一画角,数一数角的个数,进一步巩固角的定义。第二环节通过孩子动手制作活动角,知道角的大小与两边的张口有关,与边的长短无关,学会比较角的大小。这也是本节课的难点,这一环节自己感觉到处理的不够好,可能我在引导孩子时也存很多问题,没能及时让孩子比一比角的大小,掌握比较角大小的方法。最后一环节让孩子动手折大小不同的角,知道角有大小。最后还给孩子留下一个难题,“五角星一共有几个角?”。激发孩子继续探讨角的这种思想。

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