The homepages of the four ICMI Affiliated Study Groups are located at the following addresses:
HPM: http://www.sju.edu/~ambruso/hpm/Welcome.html
PME: http://igpme.tripod.com/
IOWME: http://www.cccd.edu/jcordova/
WFNMC: http://www.amt.canberra.edu.au/wfnmc.html