四年级数学下册4.1《看一看》课件1北师大版.ppt

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正面,侧面,背面,第一关:慧眼识图,数学游乐园,1,下面哪一幅图是淘气看到的?(画),试一试,奖励,淘气,小红,第二关:连一连,数学游乐园,2,他们看到的是哪一面?连一连,连一连,3看一看,说一说,(1),试一试,下面的图形分别是谁看到的?,淘气,兰兰,小红,淘气,兰兰,小红,(1),(2),(3),第三关:我会说,数学游乐园,下面哪幅图是淘气看到的?哪幅图是小红看到的?,说一说,(2),淘气,小红,第四关:巧手画图,数学游乐园,从它的正面、侧面、上面分别看到的是哪一幅图形?,画一画,正面和上面,侧面,从它的正面、侧面、上面分别看到的是哪一幅图形?,侧面,正面,上面,我搭你画,从正面看到的是什么?,看看淘气画出的图形,再想一想。,淘气、笑笑、小鸟看到的各是什么形状?连一连。,搭一个 ,看一看,把你从正面、上面和左面看到的形状分别在方格纸上画出来。,正面,上面,左面,1.搭一搭,想一想,从正面看到的形状一样吗?,2.想一想,从上面看到的是什么形状?连一连。,3.想一想,在方格纸上画一画。,从上面看,看到的是什么形状? 从左面看,看到的是什么形状? 用这几块正方体还能搭出其他立体图形吗?试一试,并进行观察。,4.想一想,填一填。,上面哪些立体图形从正面看是图A? 上面哪些立体图形从正面看是图B?,5.用4个正方体搭一搭,使正面看到的形状是 ,搭出3种来。,

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