11---20 各数的认识
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11---20 各各各 各各 各各各 : 各各各 沙沙沙沙沙沙沙沙沙
description
11---20 各数的认识. 执教人 : 何宜艳. 沙河镇第二中心小学. 读直尺上的数。. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20. 做一做:. 10. 11. 12. 13. 14. 15. 17. 18. 19. ( ). ( ). ( ). ( ). 16. ( ). ( 20 ). 11 ~ 20 各数的认识. 怎样数就能一眼看出?. 1 个十. 2 个一. 2 个一. 1 个十. - PowerPoint PPT Presentation
Transcript of 11---20 各数的认识
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11---20 各数的认识
执教人 : 何宜艳
沙河镇第二中心小学
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
读直尺上的数。
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( ) ( ) ( )( ) ( ) ( 20 )10 13 14 18 1912 15 1611 17
做一做:
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11 ~ 20 各数的认识
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怎样数就能一眼看出?
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1 个十 2 个一
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1 个十 2 个一
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11
说说数的组成:
13
15
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19
20 ( 2 个十就是 20 )
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你说摆法,我猜数。
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19 11 18 12 13 17 14 16 20 15
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11 12 13 14 15 16 17 18 19 20
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20 19 18 17 16 15 14 13 12 11
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