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26年初三数学开学第一课动员PPT 难点拆解+高分方法直接用

  • 2026-08-11 16:25:03
26年初三数学开学第一课动员PPT 难点拆解+高分方法直接用

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这份九年级秋季数学开学主题班会课件，点明初三数学从算术思维转向代数推理的难度跨越，详解九上一元二次方程、二次函数、圆等核心模块的基础要点，搭配三条实用高分学习建议与课堂约定，帮学生快速建立新学期学习目标，平稳衔接初三备考节奏。

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  1. CONNECT:[ UseTime:0.001255s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
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  6. SELECT * FROM `set` [ RunTime:0.000554s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001413s ]
  8. SELECT * FROM `article` WHERE `id` = 545887 LIMIT 1 [ RunTime:0.000911s ]
  9. UPDATE `article` SET `lasttime` = 1786480725 WHERE `id` = 545887 [ RunTime:0.005847s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000583s ]
  11. SELECT * FROM `article` WHERE `id` < 545887 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004724s ]
  12. SELECT * FROM `article` WHERE `id` > 545887 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002443s ]
  13. SELECT * FROM `article` WHERE `id` < 545887 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.032715s ]
  14. SELECT * FROM `article` WHERE `id` < 545887 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.007453s ]
  15. SELECT * FROM `article` WHERE `id` < 545887 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.027933s ]
0.252554s