三年级数学下册6.1《分一分(一)》课件2北师大版.ppt

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分一分,1,2,一,分苹果,一半,如何表示“一半”,你打算怎样表示“一半”?,4,认识,动手操作一,6,动手操作二,7,认识分数各部分,8,分数线,分母,分子,读作:四分之三,练一练,9,1.蓝色部分都是图形的 吗?说一说。,10,2.分别涂出下面图形的 。,涂一涂,课堂小结,11,我们认识了分数,知道了分数的特点。,我们知道了“一半”如何用分数表示。,作业,12,1.你觉得不同事物的“一半”是不是一样大?2.你从认识分数的过程中有什么感受与启发?说给你身边的人听一听。3.完成“练一练”第2题。,

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