Pi(π) appears where you least expect it.

Coincidentally, Pi Day is also the birthday of Albert Einstein, who no doubt knew more than a little about pi. Pi Day celebrants, usually children with an enthusiastic teacher and a varying degree of personal interest in the subject, learn about pi, circles, and, if they're lucky, eat baked pies of various sorts.

Hooray for PI(e) DAY!

I was expecting a Key Lime Pie

I don't like pie...I do like chocolate cake! Ummm!

Madam Aribeth, I bear a rhyme excelling
In mystic force and magic spelling.

Great clip!

About two weeks ago I taught my five year old pi to 6 digits. That should impress a math teacher some day.

OMG Ariibeth! Everyone knows that pie are round.

I've never celebrated Pi Day, but in chemistry class we celebrated Mole Day.

Hair Pie

Haπ day! lol.