最近在教儿子一些乘法。昨天爸爸教儿子：舅舅八十一。儿子大笑不已，妈妈颇受启发：爸爸六十四。奇怪？以前咋就没想到呢？
教儿子乘法口诀
ddjjjjjj (2007-10-06 21:16:47) 评论 (0)最近在教儿子一些乘法。昨天爸爸教儿子：舅舅八十一。儿子大笑不已，妈妈颇受启发：爸爸六十四。奇怪？以前咋就没想到呢？
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教儿子乘法口诀
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