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List of forum topicsenRe: Some important demonstrations on negative numbers > a MACS<br> syllabus
http://mathforum.org/kb/thread.jspa?messageID=7938850&tstart=0#7938850
> If you have a problem with the mathematical picture that I was alluding to earlier, say it what it is.]]>Dec 18, 2012 3:51:37 PMDec 18, 2012 3:51:37 PMniederberger@comcast.net0