“The goal of Mathbuntu.org is to provide easy access to the best open source mathematics software available, and the best free** textbooks available. Mathbuntu is for learning, doing, and communicating mathematics. The software listed below forms the core of Mathbuntu. These applications put the world of mathematics at your fingertips.” (Link) (via @cgreen)

“Thomas Petra has taught math at every level for more than 20 years and encountered dubious students at every grade level. That’s why he developed Real World Math, a free website with lessons based on Google Earth aimed at grades 5 – 10. “I was trying to show them actual applications of the math ideas that they see in the textbook,” Petra said.” via Looking For Real-World Math Problems? Try Google Earth! | MindShift.

Struggling to find examples of how maths can be used in the ‘real world’? “This website aims to provide a general overview of the wide range of real-life applications of mathematics.” http://www.mathigon.org/panorama/ (Via @Kubke)