分数的意义张齐华课堂实录课件

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12 3 44 4
0
1
2
3
单位“1”
写出下列表示涂色部分的分数
1
1
1
3
4
6
请写出下列涂色部分所表示的分数:
1 2
1 3
1 3
1111 1 2 2 3 4 6 12 3
1111 1 2 2 3 4 6 12 3
猜猜一共有几枝?
来自百度文库1 6
猜猜一共有几枝?
1 6
猜猜一共有几枝?
2 5
猜猜一共有几枝?

看着“1”
2个“1”是2
4个“1”是4

看着单位“1”
5个“1”是5

看着单位“1”
6个“1”是6
1米

看着单位“1”
···5
················3
·······························1
······························43

看着单位“1”
······( )
····························( )
····························( )

看着单位“1”
1米
······( )
······································ ()
······································ ()
2 3
4

看着单位“1”
1米
······(3 )
··························(1 ) ···························(43 )

看着单位“1”
·······(2 )
····················(1 ) ···················(43 )

看着单位“1”
·······( )
·······················( )
·······················( )

看着单位“1”
······( 4 )
····························(1 ) ····························(3 )
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