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20以內(nèi)退位減法整理與復(fù)習教學(xué)反思范文-文庫吧資料

2024-10-25 12:59本頁面
  

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20-2= 14-5= 20-9= 12-6= 10-2= 20-1= 12-7= 11-3= 14-8= 10-4= 10-7= 10-2= 20-12=11-9= 20-18=20-18=10-2= 14-5=20-8= 10-8= 11-9= 12-8= 20-4= 20-18= 10-2= 10-5= 20-7= 12-9= 12-7= 20-9= 14-9= 12-5= 11-4= 14-7= 20-12= 14-8= 15-6= 11-7= 15-7= 15-9= 20-17= 15-6= 20-12= 11-7= 14-8= 13-9=20-8= 20-9= 11-9= 17-8= 13-6= 20-8= 11-4= 20-16=20-8= 16-8= 10-6= 13-7= 12-3= 10-3= 11-8= 17-9= 17-8= 10-1= 10-2= 20-5= 17-9= 20-5= 13-9= 14-7= 11-5= 20-16=12-3= 13-8=20-9= 20-1= 11-4= 11-4= 14-8= 10-7= 15-6= 20-18=20-4= 11-9= 14-9= 20-19=10-5= 10-3= 12-8= 20-6= 13-5= 15-6= 20-13=13-9= 20-8= 18-9= 15-7= 11-5= 13-9= 16-9= 20-16=20-9=14-7= 20-3= 14-8= 16-7= 20-11= 20-4= 13-9= 16-7= 12-9= 17-9= 10-6= 14-6= 20-1= 15-7= 12-9= 14-9= 10-2= 14-5= 13-7= 14-6= 14-9= 10-5= 13-7= 11-5= 20-18= 10-8= 13-6= 12-8=12-9= 11-7= 20-2= 10-9= 10-1= 20-1= 15-8= 15-8= 18-9= 12-9= 20-5= 10-4= 11-9= 15-8= 14-5= 12-9= 20-18=15-9= 13-9= 10-8= 13-4= 20-19=11-2= 11-3= 20-3= 13-5= 10-6= 12-9=20-6= 12-4= 20-13= 20-15= 20-8= 16-8= 20-13= 20-5= 13-6= 15-6= 12-6= 10-7= 10-2= 17-9= 20-17= 20-17= 13-5= 15-6= 10-4= 20-14= 12-3= 10-2= 10-5= 20-16= 20-19= 10-5= 11-2= 10-8=11-3= 11-2= 20-4= 10-5= 16-8= 14-6= 10-6= 12-3= 16-9= 16-7= 20-7= 14-9= 11-6= 20-18=13-8= 10-4= 16-9= 12-7= 20-8= 14-6= 20-12=13-4= 14-7= 17-8= 11-9= 12-9= 10-2= 13-7=15-7= 14-6= 20-7= 14-9= 15-7= 20-11= 14-8= 20-5= 18-9= 20-1= 20-8= 11-6= 13-7= 13-7= 16-7= 13-9= 20-9= 20-12= 14-7= 13-5= 14-9= 20-17= 20-4= 10-4= 20-12= 14-8= 20-18= 10-4=14-7= 20-8= 20-4= 15-9= 20-1= 17-9= 13-6= 14-6= 11-3= 15-8= 12-6= 11-6= 13-5= 20-7= 20-1= 14-9= 12-9= 15-9= 14-7= 15-8= 12-8= 13-4= 10-6= 20-16=20-17=20-12=11-3= 10-1=11-6= 15-7= 14-6= 13-8= 20-3= 13-9= 20-19=15-6= 20-5= 10-6= 13-7= 20-13=14-6= 20-5= 18-9= 20-2= 20-3= 10-4= 16-9= 11-2= 11-3= 11-2= 15-8= 11-3= 20-17=10-9= 15-9= 14-9=20-3= 13-9= 11-6= 11-2= 10-9= 16-8= 12-4= 10-4= 10-8= 11-6= 20-5= 13-4= 20-3= 10-4= 20-3= 12-8= 10-4= 16-7= 13-8= 13-7= 16-7= 20-15=10-6= 14-7= 15-9= 13-7= 20-4= 20-2=20-12= 11-9= 18-9= 10-9= 20-8= 10-9= 15-7= 11-4= 11-3= 20-9= 11-3= 13-9= 17-8= 11-9= 15-9= 11-4= 14-9= 16-7= 16-7= 17-9= 14-6= 10-4= 10-7= 11-9= 13-5= 10-2= 20-11= 15-8=10-5= 20-16= 10-3= 11-2= 20-9= 17-8= 16-8= 13-4= 20-8= 12-4= 18-9= 11-9= 12-7= 20-16= 13-4= 20-13= 16-8= 11-3= 11-9= 13-8= 11-4= 10-1= 13-7= 12-3= 11-6= 14-7= 20-2= 11-9=10-9= 16-9= 14-9= 13-5= 20-5= 11-3= 20-18=20-9= 11-2= 20-2= 20-9= 20-5= 12-7= 10-9= 12-8= 11-6= 10-4= 11-9= 20-14=12-7=20-7= 11-6= 20-19= 20-3= 10-1= 20-18= 20-19= 13-6= 20-8= 20-17= 14-7= 20-13= 20-6= 15-6= 10-2= 10-1= 13-7= 14-9= 15-6= 10-3=10-7= 20-9= 12-4= 14-7= 12-4= 20-18= 16-8= 14-9= 12-9= 13-8= 20-6= 20-6= 16-8= 20-17= 14-5= 13-4= 16-7= 11-8= 14-9= 16-7=11-4= 12-3= 11-5= 20-18= 15-6= 20-1= 15-7= 14-6= 17-8= 13-6= 11-7= 12-4= 20-17= 17-9= 10-2= 20-13= 20-9= 20-4= 10-6= 20-1=。,將起到非常重要的作用??v觀本節(jié)課,我對自己這節(jié)課有以下幾點認識:,良好的加減法口算技能對學(xué)生今后的數(shù)學(xué)筆算打下堅實的學(xué)習基礎(chǔ)。在此基礎(chǔ)上、教師還通過題組練習,加深學(xué)生對加減法相互關(guān)系間的緊密聯(lián)系,以此滲透加減法的相互關(guān)系,對學(xué)生形成比較完備的知識系統(tǒng)埋好伏筆。為此教師把退位減法的破十規(guī)律當做了本節(jié)課的重點。為使學(xué)生進一步加深對規(guī)律表的深刻認識,在學(xué)生探尋萬表中的規(guī)律后,教師安排了20以內(nèi)退位減法的鞏固練習,鞏固練習起到了加深學(xué)生口算技能與計算機巧的作用。在教學(xué)中,教師提示學(xué)生采取橫豎結(jié)合的辦法說說自己的發(fā)現(xiàn)。緊接著,通過小組合作,學(xué)生較快地算出了20以內(nèi)退位減法
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