abacus math (转载)# NextGeneration - 我爱宝宝
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【 以下文字转载自 Parenting 讨论区 】
发信人: Sunnyday9 (Bless), 信区: Parenting
标 题: abacus math
发信站: BBS 未名空间站 (Tue Sep 4 17:55:01 2012, 美东)
Any one had experience with abacus math? Is it good for 4.5 yrs old?
发信人: Sunnyday9 (Bless), 信区: Parenting
标 题: abacus math
发信站: BBS 未名空间站 (Tue Sep 4 17:55:01 2012, 美东)
Any one had experience with abacus math? Is it good for 4.5 yrs old?