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求求了教材!能不能直白点?新苏教四上商不变规律那道题花了一节课

  • 2026-09-22 09:44:01
求求了教材!能不能直白点?新苏教四上商不变规律那道题花了一节课
就说整理与复习第12题
首先，孩子们看不懂那个表格！
然后说规律，只知道商不变！
再引导为啥不变，请学生说前两行的含义，再继续说下去每一行与第一行的对比含义，说多了，孩子们终于发现了：首数不变，
首数指什么？继续追问学生。
最后整理出来被除数和除数的事情，但是零除外，没有一个娃想到！
为啥这一道题不能变成一个课时安排在课本里面！为啥除法性质，连除简便运算不可以变一个例题重点出示？藏在复习题里面，新教师根本无法处理好这个事🥹
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《走遍美国》第4集|纸质教材第2课第1部分 sister-in-law亲属词汇

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  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=089aded08cc48af1864531b2e809b4e9
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  1. CONNECT:[ UseTime:0.000801s ] mysql:host=172.18.0.4;port=3306;dbname=c_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001085s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000545s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000405s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000642s ]
  6. SELECT * FROM `set` [ RunTime:0.000359s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000748s ]
  8. SELECT * FROM `article` WHERE `id` = 471712 LIMIT 1 [ RunTime:0.000457s ]
  9. UPDATE `article` SET `lasttime` = 1790115714 WHERE `id` = 471712 [ RunTime:0.001614s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000406s ]
  11. SELECT * FROM `article` WHERE `id` < 471712 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000540s ]
  12. SELECT * FROM `article` WHERE `id` > 471712 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000501s ]
  13. SELECT * FROM `article` WHERE `id` < 471712 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000691s ]
  14. SELECT * FROM `article` WHERE `id` < 471712 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000747s ]
  15. SELECT * FROM `article` WHERE `id` < 471712 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000795s ]
0.099931s