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小学科学课《呼吸的变化》课件

  • 2026-10-01 12:36:50
小学科学课《呼吸的变化》课件，从"跑完步为什么会大口喘气"出发，先统一计数标准——一呼一吸算一次呼吸，再让学生亲身测量安静状态和运动后的每分钟呼吸次数，用数据说话：运动后呼吸明显又快又深。通过对比分析，帮学生理解背后的原因——运动消耗更多氧气，身体需要加快呼吸来补充。全文件内容可自由编辑，所有人物元素支持放大缩小，老师可按照自身教学喜好自主DIY调整，排版整洁适配大屏投屏，无水印直接可用。#呼吸的变化 #科学课件 #小学科学 #运动后呼吸 #气体交换 #科学老师
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【精品原创课件逐字稿】《八上第6课 戊戌变法》

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  1. CONNECT:[ UseTime:0.000560s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000715s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000435s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000398s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000615s ]
  6. SELECT * FROM `set` [ RunTime:0.000332s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000632s ]
  8. SELECT * FROM `article` WHERE `id` = 533063 LIMIT 1 [ RunTime:0.000337s ]
  9. UPDATE `article` SET `lasttime` = 1790883147 WHERE `id` = 533063 [ RunTime:0.000886s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000289s ]
  11. SELECT * FROM `article` WHERE `id` < 533063 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000479s ]
  12. SELECT * FROM `article` WHERE `id` > 533063 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000392s ]
  13. SELECT * FROM `article` WHERE `id` < 533063 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000687s ]
  14. SELECT * FROM `article` WHERE `id` < 533063 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000598s ]
  15. SELECT * FROM `article` WHERE `id` < 533063 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000716s ]
0.094657s