Newly augmented with followup post pointing into records from Pycon / Chicago 2009.
http://mathforum.org/kb/message.jspa?messageID=6925749&tstart=0 (mentions Holden, Benson)
Got some kudos from Bill Marsh on the original essay, one of the forum contributors.
Kirby
FYI mentions Python in connection with constructivism a few times, also OLPC and MIT:
http://mathforum.org/kb/thread.jspa?threadID=2019948&tstart=0
Comments welcome of course.
Kirby
--
>>> from mars import math
http://www.wikieducator.org/Digital_Math