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九上热机全套教案课件,新手老师直接备课

  • 2026-07-27 20:04:43
九上热机全套教案课件,新手老师直接备课

九上热机全套教案课件，新手老师直接备课

九年级物理热学头疼老师快看！

KK 老师这套《热机》配套教案 + 课件直接抄作业🤩

开篇用超音速赛车视频吸引学生，试管冲塞演示实验直观讲清热机能量转化，从蒸汽机过渡到内燃机逻辑顺滑。

重点拆解汽油机四冲程，气门状态、活塞运动、能量转化逐条梳理，搭配动画示意图超好理解；再对比汽油机、柴油机结构、点火方式、适用场景，异同点清晰区分。

教案流程完整，课堂提问、分层练习、拓展内容全部备好，知识点层层递进。配套课件动画素材齐全，不用自己找模型图、实验视频。不管刚入职新手还是资深教师，拿来就能上课，大幅缩减备课、做 PPT 的时间，轻松攻克四冲程教学难点💯

#九年级物理 #热机教案 #四冲程汽油机 #内能利用 #初中物理课件 #教师备课 #高效备课 #物理热学 #新手物理老师 #课堂资源

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  1. CONNECT:[ UseTime:0.001031s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001288s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.003169s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002050s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001583s ]
  6. SELECT * FROM `set` [ RunTime:0.000656s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001500s ]
  8. SELECT * FROM `article` WHERE `id` = 518173 LIMIT 1 [ RunTime:0.006764s ]
  9. UPDATE `article` SET `lasttime` = 1785406276 WHERE `id` = 518173 [ RunTime:0.020217s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001933s ]
  11. SELECT * FROM `article` WHERE `id` < 518173 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001173s ]
  12. SELECT * FROM `article` WHERE `id` > 518173 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004519s ]
  13. SELECT * FROM `article` WHERE `id` < 518173 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001703s ]
  14. SELECT * FROM `article` WHERE `id` < 518173 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.021608s ]
  15. SELECT * FROM `article` WHERE `id` < 518173 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.011197s ]
0.244232s