Math Forum http://mathforum.org/kb List of forum topics en Visit us at NCTM! http://mathforum.org/kb/thread.jspa?messageID=1471652&tstart=0#1471652 Friday this week at the NCTM National. You could win valuable]]> Apr 2, 1995 11:56:46 AM Apr 2, 1995 11:56:46 AM annie@forum.swarthmore.edu 0