notes-math-visualProofs
http://math.stackexchange.com/questions/733754/visually-stunning-math-concepts-which-are-easy-to-explain
https://en.wikipedia.org/wiki/User:LucasVB/Gallery
http://1ucasvb.tumblr.com/
http://blog.matthen.com/
https://en.wikipedia.org/wiki/User:Rocchini