Math

Puzzle of the Week

It’s a dark panel in a dark elevator, so I’m not sure how well you can see the details, but this is the elevator panel in the hotel where Barbara and I have been staying in NYC. The puzzle is… Read More ›

Code Girls

You know how college recommendation forms often ask “What three words first come to mind about this applicant?” In the case of Code Girls: The Untold Story of the American Women Codebreakers of World War II, the three words would be fascinating, absorbing,… Read More ›

No Pi Day?

This is the first time in 26 years that I haven’t been able to observe a weekday Pi Day with any of my classes. Sigh. But there are plenty of online resources for my past, present, and future students.