Math into code

http://matt.might.net/articles/discrete-math-and-code/

Mildly interesting article... kind of functional programming from the math side...

Bayes Probability problem set

http://allendowney.blogspot.com/2011/10/all-your-bayes-are-belong-to-us.html

Making Maths easier

http://worrydream.com/KillMath/

This is an interesting and incredibly ambitious project. 

Visualising math

http://www.xamuel.com/how-i-visualize-certain-subfields-of-math/

This is mildly interesting.