第1课时 数花生（18页PPT）

第1课时 数花生
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你能数出这些数吗？
……
谁能接着数下去？
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淘气和笑笑成绩好老师奖励了他们一些花生？
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二十九，后面是三十。
……二十七、二十八、二十九、后面是……
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九十九，后面是一百。
……九十七、九十八、九十九、后面是……
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一个一个地数，数出三十六个花生。
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五个五个地数，数出八十个花生。
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说一说。
五十、四十、三十、二十、十。
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说一说。
六十二、七十二、八十二、九十二。
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在下面各数的后面，连着数出五个数来。
二十三 五十六 七十七 八十九 九十五
二十四
二十五
二十六
二十七
二十八
五十七
五十八
五十九
六十
六十一
七十八
七十九
八十
八十一
八十二
九十
九十一
九十二
九十三
九十四
九十六
九十七
九十八
九十九
一百
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圈一圈，数一数。
四十二
还能五个五个地数。
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圈一圈，数一数。
三十三
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圈一圈，数一数。
还能两个两个地数。
三十三
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