What Is a CRS?
A classroom response system (sometimes called a personal response system, student response system, or audience response system) is a set of hardware and software that facilitates teaching activities such as the following.
A teacher poses a multiple-choice question to his or her students via an overhead or computer projector, perhaps using PowerPoint to do so.
Each student submits his or her answer to the question using a handheld transmitter (often called a “clicker”) that beams an infrared or radio-frequency signal to a receiver attached to the teacher’s computer.
Software on the teacher’s computer collects the students’ answers and produces a histogram showing how many students chose each of the answer choices.
