Andrew LiuAndrew Liu is a Professor Emeritus of the University of Alberta in Edmonton, Canada. He has a doctorate in mathematics as well as a professional diploma after degree in elementary education. Over his career, he had primary responsibility within the Dpartment of Mathematical and Statistical Sciences for designing and teaching the lone course offered to students in elementary education. He acted as the deputy leader of the USA team and the leader of the Canadian team in the International Mathematical Olympiad and ran a mathematical circle for junior high school students, which he did for thirty-two years. He has authored ten other books prior to this volume, four of which were published by the Mathematical Association of America. He was also a winner of the Deborah and Franklin Teppo-Haimo Award. Read More Read Less