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List of forum topicsenRe: Some important demonstrations on negative numbers > a MACS syllabus
http://mathforum.org/kb/thread.jspa?messageID=7938532&tstart=0#7938532
On Dec 17, 2012, at 10:04 PM, Joe Niederberger <niederberger@comcast.net> wrote:

> You cannot argue any]]>Dec 17, 2012 11:43:18 PMDec 17, 2012 11:43:18 PMsyscore0Re: Some important demonstrations on negative numbers > a MACS<br> syllabus
http://mathforum.org/kb/thread.jspa?messageID=7938484&tstart=0#7938484
>But the mathematics isn't the pictures, it is in formal thinking.