SigPrep: Open Source Web-Based Prework for Signals and Systems [SP Education

Abstract

An introductory course in signals requires a wide background of prerequisites covering complex numbers, series, calculus, and basic mathematical logic. Students often fail to engage with the material and find the course difficult because they do not recall the prerequisites. Time and curricular constraints usually limit in-class review. To address these issues, we present SigPrep, a set of open source, web-based preparatory modules for introductory courses in signals. SigPrep is designed as a preclass assignment that students can do independently at a self-set pace. SigPrep is designed in WeBWorK, a widely used platform for free, open source problems for science and math classes. Using WeBWorK features, SigPrep provides students instant feedback and linkages to relevant external e-learning resources as a refresher for concepts in which they fail to exhibit adequate proficiency. Instructors are also able to track students? progress and performance. We outline the pedagogical design of SigPrep, which provides problems of particular relevance and applicability covering prerequisites for signals classes. Finally, we share results and feedback from our own experience with using SigPrep as part of our teaching of an introductory class on signals.