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11---20 各数的认识

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.

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11---20 各数的认识

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  1. 11---20各数的认识 执教人: 何宜艳 沙河镇第二中心小学

  2. 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

  3. 做一做： 10 11 12 13 14 15 17 18 19 （ ） （ ） （ ） （ ） 16 （ ） （20）

  4. 11～20各数的认识

  5. 怎样数就能一眼看出？

  6. 1个十 2个一

  7. 2个一 1个十

  8. 说说数的组成： 11 13 15

  9. 19 20 （2个十就是20）

  10. 你说摆法，我猜数。

  11. 你能找到它们吗？

  12. 13 18 17 16 15 20 11 12 14 19

  13. 15 13 16 11 12 14 17 20 18 19

  14. 16 18 15 20 19 17 14 11 13 12

  15. 谢谢合作！

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