The Signals And Systems Concept Inventory
John R. Buck, Kathleen E. Wage, Cameron Wright, Thad Welch
Abstract
This paper describes the development of continuous-time and discrete-time signals and systems concept inventory exams for undergraduate electrical engineering curricula. Both exams have twenty-five multiple choice questions to assess students' understanding of core concepts in these courses. The questions require little or no computation, and contain incorrect answers that capture common student misconceptions. The design of both exams is discussed, as are ongoing studies evaluating the exams at four campuses. Preliminary results from administering the continuous-time exam as a pre-test and post-test indicate a normalized gain of 0.24 0.08 for traditional lecture courses, consistent with reported results for the Force Concept Inventory exam in lecture courses for freshman physics.