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幼儿园科学之《竹蜻蜓》 PPT可编辑

  • 2026-06-28 17:35:04
幼儿园科学之《竹蜻蜓》 PPT可编辑

幼儿园科学之《竹蜻蜓》 PPT可编辑

幼儿园科学之《竹蜻蜓》 PPT 23页 动态可编辑 带教案 逐字稿 说课稿
教学目标
1.认知目标：了解竹蜻蜓是中国的传统民间玩具；初步理解竹蜻蜓能飞起来是因为翅膀旋转时与空气相互作用。
2.技能目标：能够按照步骤独立或合作完成竹蜻蜓的制作；掌握放飞技巧；能在对比实验中观察、发现影响竹蜻蜓飞行效果的关键因素。
3.情感目标：体验动手制作和成功放飞竹蜻蜓的乐趣，感受中国古人的智慧，萌发对科学探索的兴趣和自信心。#幼儿园 #幼儿园课件 #幼儿园老师 #幼儿园PPT #竹蜻蜓

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  1. CONNECT:[ UseTime:0.000484s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000823s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002027s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002017s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000542s ]
  6. SELECT * FROM `set` [ RunTime:0.004299s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000693s ]
  8. SELECT * FROM `article` WHERE `id` = 529301 LIMIT 1 [ RunTime:0.042296s ]
  9. UPDATE `article` SET `lasttime` = 1783022772 WHERE `id` = 529301 [ RunTime:0.005372s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.006315s ]
  11. SELECT * FROM `article` WHERE `id` < 529301 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.010308s ]
  12. SELECT * FROM `article` WHERE `id` > 529301 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.027380s ]
  13. SELECT * FROM `article` WHERE `id` < 529301 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.011114s ]
  14. SELECT * FROM `article` WHERE `id` < 529301 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.016285s ]
  15. SELECT * FROM `article` WHERE `id` < 529301 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.022710s ]
0.226308s