Clickers are a popular hand held device used in a lot of large college classrooms. Professors can put multiple choice questions up on a large slide and students can answer them. It’s a good way for professors to gauge 1) what students already know and 2) if what they just taught the students actually sunk in.

Here is a website that goes a little more in depth into what clickers are: http://www.classroomclickers.com/

One thing I am curious about is to see if mobile devices replace clickers in the near future. When you think about it most students (at the collegiate level) have a cell phone and if not can get one for quite cheap (less than the cost of a clicker). A good mobile app could easily replace clickers.

Hope that helps,

Wade