内容正文:
含山县张公学校
苏教版本五年级下册第三单元
质数和合数
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1
教学
过程
复习导入
探索新知
课堂小结
01
02
03
04
巩固练习
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2
复习导入
24的因数有哪些?56的呢?
怎么找一个数的因数?
24的因数有:1、24、2、12、3、8、4、6。
56的因数有:1、56、2、28、4、14、7、8。
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3
复习导入
按能否被2整除,可以把自然数分成哪两类?
自然数
奇数
偶数
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