Monthly Archives: June 2012

Trig Decor

Who says trig is boring?

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Geometric Series to the Rescue!

On a recent road trip, the driver asked me to compute the car’s mileage per gallon. She handed me a little notebook with odometer readings and gasoline gallons at each filler-up. I guess when you run a math club for … Continue reading

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WIM Video: The Pigeonhole Principle

The latest in Elisenda Grigsby’s WIM Video series features Harvard graduate student and Girls’ Angle mentor Charmaine Sia. ┬áIn it, she gives two applications of the pigeonhole principle:

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