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一年级数学必看:《十几减 7、6》精品课件

  • 2026-05-11 04:24:31
一年级数学必看:《十几减 7、6》精品课件

一年级数学必看：《十几减 7、6》精品课件

🎨20 以内退位减法既是重点，也是难点。尤其是《十几减 7、6》这一课，既要让学生们理解算理，又要训练口算速度，还要让课堂有趣不枯燥，备课压力真的不小。

📖本课聚焦 20 以内加减法口算能力，让学生在理解算理的基础上熟练计算，同时培养观察、操作、合作交流能力，体会数学与生活的联系，增强应用意识。

☀️教学重难点
重点：掌握十几减 7、6 的计算方法，正确熟练计算。
难点：理解破十法、连减法、想加算减法的算理。

情境化导入
“数字宝藏闯关” 趣味情境开场，搭配 “口算烟花秀” 小游戏，快速复习十几减 9、十几减 8，激活旧知，自然过渡到新课学习。

🥗在闯关氛围中主动参与，课堂纪律好、专注度高，完全不用老师费力控场。

🧀学生从情境中获取信息，提出数学问题，培养学生的观察能力和问题意识，让学生感受到数学问题源于生活，增强学生学习数学的主动性。

🌮组织小组讨论计算方法，给学生提供了合作交流的平台，让学生在相互交流和启发中，探索不同的计算方法，培养学生的合作意识、交流能力和创新思维。
 
🪁数学消消乐和实际问题的练习，增加了练习的趣味性和综合性，能激发学生的学习兴趣，培养学生运用所学知识解决实际问题的能力，提高学生的综合素养。

🌯三大优势
✅ 完整可直接上课
✅ 情境有趣
✅ 紧扣核心知识点与新课标

#数学 #小学数学 #数学学习 #数学老师 #小学数学老师 #数学备课 #课件ppt

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  138. /yingpanguazai/ssd/ssd1/www/a.sjds.net/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/a.sjds.net/runtime/temp/97cad012e8e159aae2fe347a411e8351.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/a.sjds.net/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000915s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000770s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000333s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000299s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000545s ]
  6. SELECT * FROM `set` [ RunTime:0.000317s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000638s ]
  8. SELECT * FROM `article` WHERE `id` = 499366 LIMIT 1 [ RunTime:0.000441s ]
  9. UPDATE `article` SET `lasttime` = 1778585891 WHERE `id` = 499366 [ RunTime:0.011753s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000236s ]
  11. SELECT * FROM `article` WHERE `id` < 499366 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000443s ]
  12. SELECT * FROM `article` WHERE `id` > 499366 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000472s ]
  13. SELECT * FROM `article` WHERE `id` < 499366 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003570s ]
  14. SELECT * FROM `article` WHERE `id` < 499366 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000744s ]
  15. SELECT * FROM `article` WHERE `id` < 499366 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000698s ]
0.168410s