Technology links for maths

Over the weekend I watched technology news and brought me to this!http://sketchometry.org/ 

It's similar to Geogebra but is offered as a sketching tool on the web, iDevice or android.

Wolfram is a great tool as well or Wolfram Math World.

Math is fun is another site but isn't as detailed.  

I saw this online this morning. Teaches Financial Maths  http://enchantedcollar.com/videos/

Math Tab is good fun and lets you play around with things  http://www.mathtab.com/ or Math cast is another I picked up from the NDLR Research Symposium yesterday at the conference in Limerick  http://mathcasts.org/

This is brilliant, supports project maths and does everything in videos as a supplement to understanding problems outlined in the classroom.  http://www.themathstutor.ie/