On October 3rd Department of Physics hosted the first of three physics workshops of the Southeastern Pennsylvania Section (SEPS) of the American Association of Physics Teachers (AAPT). The theme was “Measuring Mass”. Participants constructed and calibrated a number of different kinds of apparatus to measure inertial and gravitational mass. This was a hands-on workshop with some “take-home” goodies for their own classes. The Workshop presenters were Barry Feierman and Kathleen Hennessy.