Dynamic, Animated Feedback for Randomized Problems with Computer-Based Testing

Computer-based testing (CBT) is becoming more common in CS Education spaces, and offers many advantages over paper-based modalities. For example, computerized assessments make it easier for students to learn from a wider range of questions in problem sets through problem randomization. Students can then work on problem after problem in a formative assessment mode of learning. While computer-based assessments help facilitate randomized prob- lem generation, solution feedback is typically delivered in static text or image formats, or perhaps a video may be provided. Typically these show or describe the instructor solving a generic problem, not this particular randomized problem.