Lectures on the Go

As more colleges use 'coursecasting,' professors are split on its place in teaching

Take your typical college student — bright, curious, but probably a bit sleep-deprived and short on attention span. Stick that student in a lecture hall with a professor droning on for 50 minutes about macroeconomics or teleology. Then give the student a laptop with wireless access to the Internet, which lets him or her furtively chat with friends via instant-messenger software.

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