一年级数学上册第6单元《11_20各数的认识》教学课件新人教版.ppt

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1120各数的认识,先数出十根小棒,捆成一捆。,10个一,1个十,11 12 13 19 20,读作:十一 十二 十三 十九 二十,再接着数一数,摆一摆。,十三,13,说说数的组成:,12,14,15,拨一拨,说一说。,读作十五。,从右边起,第一位是各位,第二位是十位。,读作二十。,十位上的1表示1个十。,打电话。(连线),说一说,写一写。,1,6,填一填。,+ 6 = 16,+,=,10,10,9,19,1,9,8 + 10 =,试一试。,10 + 8 =,4 + 10 =,10 + 4 =,2 + 10 =,10 + 2 =,18,18,12,12,14,14,19,20,(2个十就是20),1个十,6个一,?,16,2个十,20,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,读直尺上的数。,你能找到他们并能给他们排排队吗?,11,12,13,14,15,16,17,18,19,20,谢谢,观看,!,

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