Slashdot: News for nerds, stuff that matters: "Clickers Redefining Classrooms" more links to voting tools:
"It seems that teachers may have a new way to boost classroom participation using a device called a clicker. A clicker is a small handheld device that allows its user to wirelessly respond to various prompts selected by a teacher. So when a teacher wants opinions on topics that people tend to shy away from like sex, religion, and politics, the question can be asked and the students can answer anonymously via the clicker. Everything from a simple poll to a graded quiz can be conducted using the device. In the age of cell phones and wireless computers such a technology is likely to be well-received by students, but one can't help but wonder if such a device will breed less assertive graduates who lack the will to stand up and voice their opinion on sensitive issues."