California boy, grew up in Silicon Valley (this was before silicon); family moved to San Francisco during the summer of love though they were scandalized by it at the time. Tim went south to a small technical school in Pasadena and returned to the Bay Area for graduate school. For most of his professional life he has been a free-lance science and math educator, although he has done stints with the Jet Propulsion Laboratories, Lick-Wilmerding High School, the University of California at Berkeley, and Mills College.