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五、周长

义务教育课程标准实验教材用书北京师范大学出版社 数学三年级上册. 五、周长. 认识周长. 西航二校：任亚娣 2009 年 6 月. 第一关：当机立断！. 第二关：奇思妙想！. 两只蜗牛在不同形状的跑到上赛跑，公平吗？. 让两只蜗牛在这样的跑道上赛跑，公平吗？. 第三关. 第三关：火眼金睛！. 我俩谁走的多呢？. 祝贺你，闯关成功！. 你有什么感受？说说吧！. 谢谢大家！.

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五、周长

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  1. 义务教育课程标准实验教材用书北京师范大学出版社 数学三年级上册 五、周长 认识周长 西航二校：任亚娣 2009年6月

  2. 第一关：当机立断！

  3. 第二关：奇思妙想！

  4. 两只蜗牛在不同形状的跑到上赛跑，公平吗？

  5. 让两只蜗牛在这样的跑道上赛跑，公平吗？ 第三关

  6. 第三关：火眼金睛！

  7. 我俩谁走的多呢？

  8. 祝贺你，闯关成功！

  9. 你有什么感受？说说吧！

  10. 谢谢大家！

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