||Clickers (or personal response systems, polling systems, etc.) have been increasingly used in classrooms of all sizes and at institutions of all sizes. The real-time feedback and classroom anonymity make these devices a powerful pedagogical tool to increase student engagement in the classroom. Increasingly, clickers are being used as a research tool to investigate student learning. Presentations are requested from clicker users at all levels, from the first-time user to the chemical education researcher. Presenters are particularly encouraged to provide data regarding the effectiveness of the devices, where possible. Presentations are welcome to describe clicker use in all courses, including large enrollment introductory level courses and small enrollment upper (and lower) level courses.