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《梯形的面积》课件+教案

  • 2026-10-28 02:15:42
《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:0.000742s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000906s ]
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  6. SELECT * FROM `set` [ RunTime:0.000649s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000706s ]
  8. SELECT * FROM `article` WHERE `id` = 462748 LIMIT 1 [ RunTime:0.000408s ]
  9. UPDATE `article` SET `lasttime` = 1794100522 WHERE `id` = 462748 [ RunTime:0.001344s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000312s ]
  11. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000450s ]
  12. SELECT * FROM `article` WHERE `id` > 462748 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000384s ]
  13. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000782s ]
  14. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000787s ]
  15. SELECT * FROM `article` WHERE `id` < 462748 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000571s ]
0.091793s