At universities, is better learning a click away? - washingtonpost.com

BOULDER, Colo. -- The students in Michael Dubson's physics class at the University of Colorado fell silent as a multiple choice question flashed on a screen, sending them scrambling for small white devices on their desks.

Within seconds, a monitor on Dubson's desk told him that 92 percent of the class had correctly answered the question on kinetic energy, a sign that they grasped the concept...