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Social studies teachers now have a new resource to help them integrate 21st-century skills into their lessons: a free online document that maps various social studies projects, tasks, and outcomes to corresponding skills--such as problem solving and critical thinking--that are becoming increasingly important for 21st-century success.

In corporate and government bureaucracies, the standard method for making a presentation is to talk about a list of points organized onto slides projected up on the wall. For many years, overhead projectors lit up transparencies, and slide projectors showed high-resolution 35mm slides. Now "slideware" computer programs for presentations are nearly everywhere. Early in the 21st century, several hundred million copies of Microsoft PowerPoint were turning out trillions of slides each year.