Professor Johnston completed his undergraduate degree at St. John's College in Santa Fe, NM, in a program emphasizing discussion-based classes with a focus on source texts in western philosophy, literature, and history of math and science.  His Ph.D. in Mathematics is from Western Michigan University where he studied Graph Theory with Ping Zhang.  Before coming to Trinity College, he most recently held a similar position at Skidmore College.  He is excited about meeting the students here and finding the right balance of in-class activities and interactive lectures as he teaches classes across the mathematics curriculum.