Commentary:Clickers(personal response units)May Add Value to Lectures

摘要

You can doubtless recall putting your hand up in a school class to eagerly answer a teacher's question.Some of that"let me answer"enthusiasm can be cap tured in large groups by the use of clickers,devices that look very much like a remote control for a televi sion.They are familiar to many people as the means to get audience responses in television quiz programs.