When my son and I walking, I will teach him some math,

if he can understand, I will continue. If not, I will teach him again two or three months late. I think if he spend one hour to learn something that one year late he only use 10 mins, it's not cost efficient and purely waste my time and his time.

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you make some sense as well, thanks -noworry- 给 noworry 发送悄悄话 noworry 的博客首页 (0 bytes) () 06/03/2009 postreply 12:28:43

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