August 3, 2001

Professor Questions Students by Computer in Class

While he's lecturing, William F. Junkin likes to track his students' progress. But he's not keen about putting them on the spot with a pop question.

"If I ask a question in class, all the students stop thinking and turn to watch the student squirm," says Mr. Junkin, a physics professor at Erskine College, in South Carolina.

"If they give a bad answer," he adds, "they'll hate me, and they're not going to learn any physics. It's a lose-lose situation."

So Mr. Junkin, who is

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