Math. B.Sc. in Chemistry, University of Waterloo. Mr. Keller taught Math & Science in Toronto, Canada before moving to Chicago in 2007. Before ICJA, Mr. Keller worked as an Anaylitical Chemist, specializing in product malfunction for new pharmaceuticals. Mr. Keller proudly joined ICJA in 2010 and is known as the mathematical riddler who likes to solve riddles with keen students.