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《梯形的面积》课件+教案

  • 2026-04-19 11:22:53
《梯形的面积》课件+教案

本节课引导学生经历“猜想—操作—验证—推导”的完整探究过程，巧妙利用数字化工具，将梯形面积的转化与公式推导变得直观生动，有效突破了教学难点。

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  1. CONNECT:[ UseTime:0.000602s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000888s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000381s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000288s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000722s ]
  6. SELECT * FROM `set` [ RunTime:0.000243s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000735s ]
  8. SELECT * FROM `article` WHERE `id` = 462748 LIMIT 1 [ RunTime:0.000444s ]
  9. UPDATE `article` SET `lasttime` = 1776689545 WHERE `id` = 462748 [ RunTime:0.011904s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000373s ]
  11. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001818s ]
  12. SELECT * FROM `article` WHERE `id` > 462748 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001646s ]
  13. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001484s ]
  14. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001178s ]
  15. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001082s ]
0.098082s