Michelene Chi - University of Pittsburgh
http://www.pitt.edu/~chi/

Manuela Maria David - Universidade Federal De Minas Gerais, Brazil

Guershon Harel - University of California at San Diego
http://math.ucsd.edu/~harel/

James Kaput - University of Massachusetts Dartmouth
http://www.umassd.edu/cas/mathematics/people/kaput/welcome.cfm
http://www.simcalc.umassd.edu/

Eric Knuth - University of Wisconsin Madison
http://www.wcer.wisc.edu/people/pi.asp?sid=898
http://www.wcer.wisc.edu/projects/project.asp?project_num=2329&subnum=0&catID=10

Gary Davis - University of Massachusetts Dartmouth
http://merg.umassd.edu/members/gdavis/main.html
http://merg.umassd.edu/~gdavis/