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http://mathforum.org/kb/thread.jspa?messageID=7928183&tstart=0#7928183
its origins.

The concept emerged in various lineages, threads,]]>Nov 25, 2012 11:39:34 PMNov 25, 2012 11:39:34 PMkirby.urner@gmail.com0Re: Best answer to child asking "Where does the rational number line start?"
http://mathforum.org/kb/thread.jspa?messageID=7928182&tstart=0#7928182
> What is the best answer]]>Nov 25, 2012 11:04:05 PMNov 25, 2012 11:04:05 PMsyscore0Best answer to child asking "Where does the rational number line<br> start?"
http://mathforum.org/kb/thread.jspa?messageID=7928010&tstart=0#7928010
"Where does the rational number line start?"

Yes it goes on forever in both directions]]>Nov 25, 2012 8:23:55 PMNov 25, 2012 8:23:55 PMASAPANS2