Keith Devlin

Keith J. Devlin (born 16 March 1947) is a British and American mathematician and professor emeritus at Stanford University. He is known for his work in mathematical cognition, information theory, and the public communication of mathematics. Devlin has authored more than 30 books and numerous scholarly articles. He was a regular commentator on National Public Radio (NPR) as “the Math Guy” and is the co-founder and President of BrainQuake, an educational technology company that develops mathematics learning games. Provided by Wikipedia