是啊,5歲時就應會數:一五,一十,十五,二十...~~~~~
所有跟帖:
• 還真別說,當數一大堆東西時,用5進製數得很快,建議推廣:D -藍岩- ♀ (0 bytes) () 08/14/2010 postreply 20:10:03
• 還真別說,當數一大堆東西時,用5進製數得很快,建議推廣:D -藍岩- ♀ (0 bytes) () 08/14/2010 postreply 20:10:03
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