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不倒翁课件|科学一年级第2课

  • 2026-11-06 01:58:31
不倒翁课件|科学一年级第2课

不倒翁课件｜科学一年级第2课

不倒翁这课到底怎么上？

一年级孩子光看可不够，得动手玩、动手做，才能真懂“为什么推不倒”。

这份科学课件带学生观察不倒翁、设计制作、配重测试、再改进，把探究过程完整走一遍，不倒翁不倒的秘密——底部重、重心低，讲得明明白白。

整套都齐：带动画PPT（可编辑）、教案、逐字稿、一课一练、必背问答、单课知识点，备课上课一步到位。

想省备课时间的科学老师，这套可以直接上手。

#小学科学 #一年级科学 #科学课件 #不倒翁 #不倒翁课件 #不倒翁原理 #科学教案 #动手实验 #手工制作 #科学探究

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基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000670s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000951s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000428s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000333s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000670s ]
  6. SELECT * FROM `set` [ RunTime:0.000342s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000666s ]
  8. SELECT * FROM `article` WHERE `id` = 541326 LIMIT 1 [ RunTime:0.000352s ]
  9. UPDATE `article` SET `lasttime` = 1793995184 WHERE `id` = 541326 [ RunTime:0.001059s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000313s ]
  11. SELECT * FROM `article` WHERE `id` < 541326 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000409s ]
  12. SELECT * FROM `article` WHERE `id` > 541326 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000362s ]
  13. SELECT * FROM `article` WHERE `id` < 541326 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000794s ]
  14. SELECT * FROM `article` WHERE `id` < 541326 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000458s ]
  15. SELECT * FROM `article` WHERE `id` < 541326 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000831s ]
0.086971s