Digital lecturing systems (computer and projector, often with PowerPoint) offer physics instructors the ability to incorporate graphics and the power to share and reuse materials. But these systems do a poor job of supporting interaction in the classroom. For instance, with digital presentation systems, instructors have limited ability to…

Describes a method for students to evaluate and experience a repetition of important physics concepts during regular lecture sessions. The major goal was to train students to focus attention on course materials. (SK)