Classroom Clickers and the Cost of TechnologyLast spring I received an e-mail message from my university's Center for Excellence in Learning and Teaching that read like an advertisement: "If you are thinking of ordering personal response system units, or clickers, for your class next fall, be sure to attend the upcoming CELT session, Using TurningPoint Clickers... Copyright © 2009 by The Chronicle of Higher Education Subscribe | About The Chronicle | Contact us | Terms of use | Privacy policy | Help |