Links/Math

• Open source statistics and graphings: R Framework

• Sci/Calc archives for Mac
• http://theodoregray.com/ -- built a "periodic table" w/ samples; co-founder of Wolfram Research

• http://www.exploremath.com/

• The Sound of Mathematics

Computer Alegbra

• http://maxima.sourceforge.net/
• Wolfram
• NuCalc / Pacific Tech