Good place to start for fuzzy math

The proper term for fuzzy math is constructivist math.

I like E. D. Hirsch’s address to the California State Board of Ed as a place to start.

http://www.coreknowledge.org/CKproto2/about/articles/CAStBrd.htm

NYC Hold is also a terrific site:

http://www.nychold.com/

Just found another article by Hirsch on constructivist education that looks good:

http://www.taemag.com/issues/articleid.16209/article_detail.asp