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[請益] 當學生上課不抄重點>"<

[ CS_TEACHER ]8 留言, 推噓總分: +6

作者: autobio - 發表於 2009/01/08 01:10(17年前)

5^F推coco100:我下課前都會檢查講義沒抄的不准走~~01/08 11:55

[請益] 最近補習班遇到對手

[ CS_TEACHER ]12 留言, 推噓總分: +7

作者: chunchunlin - 發表於 2009/01/07 11:48(17年前)

1^F推coco100:原來除了高雄以外北部也開始玩這一套啦!!01/07 13:22

[請益] 請問一下各位大大有關高中數學教學的工作

[ CS_TEACHER ]2 留言, 推噓總分: +1

作者: jasenkey - 發表於 2009/01/05 15:13(17年前)

1^F推coco100:你到底要教高中數學還是大學微積分??01/05 21:33

[心情] 國中數學

[ CS_TEACHER ]26 留言, 推噓總分: +6

作者: ESenjoy - 發表於 2009/01/04 12:43(17年前)

1^F推coco100:在芝麻街學國中數學真的會比較有趣嗎??01/04 13:22

[請益] 勞保與國民年金問題

[ CS_TEACHER ]11 留言, 推噓總分: +3

作者: hhtj - 發表於 2009/01/01 23:07(17年前)

1^F推coco100:國民年金要滿25歲才能保~~01/01 23:16

[薪資] 數學儲備教師

[ CS_TEACHER ]6 留言, 推噓總分: +6

作者: coflame - 發表於 2008/12/31 21:29(17年前)

3^F推coco100:你的學歷不錯對方給薪也給的很大方01/01 11:47

[心情] 補教業是不是個長遠的規畫(1).下好離ꐠ…

[ CS_TEACHER ]17 留言, 推噓總分: +16

作者: LaiFan - 發表於 2008/12/27 01:13(17年前)

13^F推coco100:幸福美滿的小賴家庭~~12/27 13:01

Re: [請益] 關於一元二次方程式的公式解

[ CS_TEACHER ]24 留言, 推噓總分: +9

作者: aaron605 - 發表於 2008/12/26 10:02(17年前)

1^F推coco100:每次看到參考書定義錯誤　我都會叫學生用立可白塗掉12/26 11:54

2^F→coco100:教到根號裡面有負數　我都會多加一句到高中就開的出來12/26 11:55

3^F推coco100:原PO說的很好數學是連貫的國中和高中的觀念銜接很重要12/26 11:58

4^F→coco100:在國中無解我都會強調無實數解12/26 11:59

13^F→coco100:因為很多題目根本不用被公式都是由定義著手12/27 13:02

Re: [請益] 關於一元二次方程式的公式解

[ CS_TEACHER ]61 留言, 推噓總分: +18

作者: nooonooo - 發表於 2008/12/25 23:38(17年前)

4^F推coco100:那你之前推文要說公式解不就不一樣了?? 想清楚吧~~12/26 00:09

5^F→coco100:看來很多人沒實際去推導過 ←這句推文讓很多人很火12/26 00:11

7^F→coco100:還有硬凹和根號4a平方有關12/26 00:12

10^F→coco100:公式解的前提a>0這種錯誤觀念叫站在學生立場想??12/26 00:14

13^F→coco100:我教書這麼多年第一次聽到12/26 00:14

15^F→coco100:書本定義不嚴謹也要想清楚~~12/26 00:15

18^F→coco100:a>0的前提只是增加學生負擔又錯誤觀念一點好處都沒有12/26 00:17

19^F→coco100:以前國立編譯館的版本就沒有這種問題12/26 00:18

20^F→coco100:根本沒有a>0的前提不要在硬凹學生立場了12/26 00:19

28^F推coco100:直接說a>0或a<0皆可用不需要硬加a>0的前題12/26 00:31

29^F→coco100:硬凹a>0的前提只會讓學生更模糊很多題目x平方項都是負的12/26 00:32

32^F推coco100:不要轉移焦點了公式解不需要有a>0前提12/26 00:42

34^F→coco100:定義要設定a>0 也是非常不嚴謹12/26 00:43

37^F推coco100:D老師PO那篇公式解定義上有規定a必須為正數就錯很大了12/26 00:46

39^F→coco100:硬是把錯誤定義a>0講成是方便學生理解很無言12/26 00:47

40^F→coco100:光定義錯誤就差很多了至少我本科系畢業很清楚定義多重要12/26 00:48

46^F推coco100:參考書如果寫公式解的定義要a>0 那就錯了12/26 00:51

50^F推coco100:定義當然是指必要條件12/26 00:54

52^F→coco100:我也教過小學~~ 也從沒吐血過!!12/26 00:55

55^F→coco100:同樣的結論硬是要分a>0和a<0只會增加定義模糊了12/26 00:58

57^F→coco100:我只想表達不要硬凹定義a>0是方便學生理解這種錯誤訊息12/26 00:59

59^F推coco100:孩子~~該睡了！！12/26 01:02

[心情] 大家會不會覺得上班時間與另ㄧ半(或其他人)...

[ CS_TEACHER ]10 留言, 推噓總分: +8

作者: supervip - 發表於 2008/12/25 23:13(17年前)

3^F推coco100:找一個也是晚班的閃光12/26 12:34

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