2006: iClicker.

Betsy Streisand May 16, 2014

No, this is not an Apple product. It was invented by two physics professors at the University of Illinois. The clicker is a student response system,  that lets teachers poll and quiz students and get results in real time.

For professors teaching big classes, it is a way to gauge the level of understanding in the audience. The professors asks a question, the students click in with their answers, and the results pop up on the screen as a bar chart.

As a nonprofit news organization, our future depends on listeners like you who believe in the power of public service journalism.

Your investment in Marketplace helps us remain paywall-free and ensures everyone has access to trustworthy, unbiased news and information, regardless of their ability to pay.

Donate today — in any amount — to become a Marketplace Investor. Now more than ever, your commitment makes a difference.