The conference finally got the best of me and I fell asleep before creating my postcard. So, here are two, both celebrating Pi Day in a different way.

I search the Digital Public Library for “pie” and found this wonderful costume design called Pineapple Pie:

And this lithograph of pi is part of a set of greek letters that are associated with two names: Ovide Reynard and Jean Jacques Theodore Sauve. I couldn’t find any real information about either of them and I thought this might be an interesting way to challenge students to do research, maybe as an engaging starter for a unit: