Students got cell phones? Try Poll Everywhere
Poll Everywhere is a service that allows you to get feedback from your audience (as a presenter) or class (as a teacher) and represent that feedback as a graph LIVE as it comes in. You can display results in a web browser or in a PowerPoint slide.
If your students are hooked on cell phone text messaging, Poll Everywhere gives you a tool to hook them into your lesson using a medium they know and love.
Here is an example of a Poll Everywhere poll, which accepts either text message input or input from this web widget. Try it out at www.polleverywhere.com.