 Fox Leadership Professor and Professor of Mathematics at the University of Pennsylvania, where he has been the Dean of the College of Arts and Sciences since 2005 and Faculty Director of Riepe College House.In 2002, DeTurck won the Haimo Award from the Mathematical Association of America for his teaching.Despite being recognized for excellence in teaching, he has been criticized for his belief that fractions are "as obsolete as Roman numerals" and suggesting that they not be taught to younger students.