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AI交互课件:数轴上的近似数

  • 2026-05-12 02:32:46
AI交互课件:数轴上的近似数
本周带着孩子们一起学习了二下第三单元《近似数》的内容，借助数轴能很好地帮助孩子们理解准确数更接近哪一个近似数。书本例题里的6988、7020都是比较好判断的数字。但是课堂作业中的有些数字（接近中心数）对于数感较弱的孩子而言，就比较难判断。如图。
因此，设计了这款《数轴上的近似数》的交互课件，旨在帮助孩子们能更加直观地感受一个数在某个区间范围内的位置。这个HTML可以实现：输入一个四位数，数轴自动在起点和终点两个端点处，出现离这个数最近的两个整千数或几千几百数或几千几百几十数；输入一个三位数，数轴自动在起点和终点两个端点处出现离这个数最近的整百数或整百整十数；输入一个两位数，数轴自动在起点和终点两个端点处出现离这个数最近的整十数。
以下是该课件的操作视频。
该交互课件的链接（自取）：

https://musk-online.fbcontent.cn/pub-musk-ai-studio/workflow/file/document/FSBmZhkbNcY3dQeKGq9TUE.html

本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

课件评选通知 | 全国高校电子信息类优质本科课件评选(2026·杭州)

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  1. CONNECT:[ UseTime:0.001174s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001515s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000758s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.004759s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001882s ]
  6. SELECT * FROM `set` [ RunTime:0.003050s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001930s ]
  8. SELECT * FROM `article` WHERE `id` = 498559 LIMIT 1 [ RunTime:0.001674s ]
  9. UPDATE `article` SET `lasttime` = 1778677945 WHERE `id` = 498559 [ RunTime:0.012969s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000839s ]
  11. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.011243s ]
  12. SELECT * FROM `article` WHERE `id` > 498559 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.005812s ]
  13. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002283s ]
  14. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.007728s ]
  15. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.035820s ]
0.267365s