Host Scott Simon talks with Weekend Edition math guy Keith Devlin, who recently wrapped up his first MOOC, or massive open online course. He taught an Introduction to Mathematical Thinking course to 62,000 students from around the world, ages 16 to 70.
From time to time during this election season we'll be introducing you to ordinary people that our reporters meet out on the campaign trail. Today: a snapshot from a Donald Trump rally in New Hampshire.
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