<p>We use <a href="http://kahoot.it">http://kahoot.it</a> a lot. The students love it because they compete against each other as they answer questions. You create a quiz (or use a public quiz) and log onto the website during class. Put it up on the projector. The students individually log in to your quiz on their phones- they even make up nicknames for themselves. They'll see your questions and they have to answer on their phones. As the quiz proceeds, it will list the top students and it will also tell you the percentages for each answer selected, so you'll know which areas need further clarification. It's great as a review for a midterm or final.</p>