Here are the links from some recent presentations:

  • http://mathtwitterblogosphere.weebly.com/
  • http://maththinking.org
  • http://visualpatterns.org
  • http://101qs.com
  • http://mathmistakes.org
  • http://www.estimation180.com/
  • http://graphingstories.com/
  • http://wees.it/flickrgroup   (Math in the Real World)
  • http://wees.it/realmathphotos
  • http://wees.it/talk
  • http://wees.it/draw
  • http://turtleart.org/
  • http://scratch.mit.edu/
  • http://python.org/
  • http://projecteuler.net/problems
  • http://codecademy.com
  • http://calculize.com/
  • http://endlos.sourceforge.net/
  • http://fraqtive.mimec.org/
  • http://geogebra.org / http://geogebratube.com
  • http://desmos.com
  • http://wees.it/robot
  • http://nlvm.usu.edu/en/nav/vlibrary.html
  • http://www.wolframalpha.com/
  • http://maxima.sourceforge.net/
  • http://www.mathics.org/
  • http://www.sagemath.org/
  • http://axiom-developer.org/
  • http://gweigt.net/Eigenmath.html
  • http://www.mathomatic.org/
  • https://davidwees.com/content/ipad-apps-elementary-school
  • http://wees.it/evaluatingtech
  • https://davidwees.com/graphgame/

More resources: