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So I flipped out of PowerPoint and typed this to my Twitter followers: "I need a cure for hiccups... RIGHT NOW! Help?" I hit Enter. I told the audience that we would start getting replies in 15 seconds, but it didn't even take that long. Here are some of the replies that began scrolling up the screen:

The physics department has replaced the traditional large introductory lecture with smaller classes that emphasize hands-on, interactive, collaborative learning. Last fall, after years of experimentation and debate and resistance from students, who initially petitioned against it, the department made the change permanent. Already, attendance is up and the failure rate has dropped by more than 50 percent.