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26年初三化学开学第一课趣味课件 入门扫盲+考点速通直接用

  • 2026-08-03 08:15:01
26年初三化学开学第一课趣味课件 入门扫盲+考点速通直接用

点击蓝字 拾光和孩子们 一起成长  

这份九年级秋季化学开学主题班会课件，从生活里的常见化学现象切入，把化学四大核心研究维度拆解给学生，同步科普必认实验仪器、安全操作规范，串联九上全学期核心基础考点，搭配实验安全守则，帮零基础的学生快速消除陌生感，顺利开启化学入门学习。

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  1. CONNECT:[ UseTime:0.000589s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000880s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002591s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000289s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000477s ]
  6. SELECT * FROM `set` [ RunTime:0.000206s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000640s ]
  8. SELECT * FROM `article` WHERE `id` = 521247 LIMIT 1 [ RunTime:0.000408s ]
  9. UPDATE `article` SET `lasttime` = 1785798825 WHERE `id` = 521247 [ RunTime:0.011623s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000251s ]
  11. SELECT * FROM `article` WHERE `id` < 521247 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000432s ]
  12. SELECT * FROM `article` WHERE `id` > 521247 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000508s ]
  13. SELECT * FROM `article` WHERE `id` < 521247 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004210s ]
  14. SELECT * FROM `article` WHERE `id` < 521247 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.012667s ]
  15. SELECT * FROM `article` WHERE `id` < 521247 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.062489s ]
0.178621s