To demonstrate angular momentum, AP physics teacher Dave Hovan showed students how to spin a basketball on the end of a pen while writing with the pen. A student’s video went viral.
Hovan, 31, teaches physics and astronomy at St. John’s College (Washington, D.C.) High School. He learned the trick from his high school English teacher, a former Harvard basketball player named Patrick Smith.
Harlem Globetrotters star Handles Franklin will visit Hovan’s AP physics class on Thursday. The teacher has been invited to demonstrate his spinning skills at a Globetrotters’ game on March 15.