Postprint version. Published in American Journal of Physics, Volume 71, Issue 11, November 1, 2003, pages 1174-1177. This article may be found online at http://dx.doi.org/10.1119/1.1590654.
Copyright © 2003 American Association of Physics Teachers. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Association of Physics Teachers.
Instructors who wish to implement an interactive lecture style, such as peer instruction, have the need to collect feedback from students in a lecture environment. We present a computer-controlled electronic circuit that allows for quick, rigorous, and accurate measurement and reporting of student feedback in the lecture environment.