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Why do you say that showing the test statistics is a bad thing? Looking at the confidence intervals tells you immediately whether the null hypothesis was accepted or rejected, and gives you a (fuzzy) idea of by how much.
Give each student a poker chip, and have them write their name on it. When it comes time to vote, have each student place their chip in a pile for yes, no, or abstention. Weight each pile, and you will know how many people voted for each.
Cliff Bleszinski, design director for Epic Games, said in an interview with Develop that while motion control schemes like Project Natal look interesting, Epic will probably be sticking with classic controllers "for the foreseeable future." He said, "Microsoft came down a few weeks before E3 and gave us a demo, and they're now shipping out the dev kits; I think it's great. When you start combining the motion-capture, the facial recognition, and the vocal recognition you can create some unique experiences. And of course more accessibility is always a good thing. When you build an interface like that though you need to [specifically] design a game for it. It can't just be tacked on."