Super Pi Day at City of Fairfax Regional Library

Today was Super Pi Day! 3.14.15, celebrated especially between 9:26:53 am and 9:26:53 pm.
(My son says it should be called Slightly-More-Accurate-Approximation-of-Pi Day, but I’m going with Super Pi Day.)


I got my geek on, with my Floating Point Pi Earrings from ThinkGeek, my Pi t-shirt from the Mathematikum in Giessen, Germany, Apple Pi socks, and of course my Prime Factorization Cardigan. I also brought in a Chocolate Angel Pi Pie.

My favorite comment was when I was explaining all this to one of the Library Friends. She said, “It’s good to see someone who loves what they do.” My translation: “You really are a Math Geek.” Yes, I am. Yes, I am.

Since a Children’s Used Book Sale was going on all day, we couldn’t use the meeting room, and decided to run an all-day Pi Day Scavenger Hunt.

Scavenger Sign

Participants only needed to answer 8 of the 10 questions, and we hoped they’d be pulled into the library to answer them. They were to write the answer on the pie piece, and get a prize when all the pieces were filled in. These were the questions:

1. For any circle, pi equals the circumference of the circle divided by what?
2. Albert Einstein was born on March 14th. What famous equation did he write?
3. Some people think we should celebrate Super Pi Day next year. Why is that?
4. What library number would you look under for books about pi?
5. What library number would you look under for books about pie?
6. List another irrational number.
7. What U.S. city has the zip code 31415?
8. Find a book in the library with “circle” in the title. List the title.
9. What letter comes after pi in the Greek alphabet?
10. Someone in the library is wearing a prime factorization sweater. What is her name? (Hint: You can google it.)

The prize was a wristband from celebrating Pi Day, along with some circular candies.

We ordered 57 wristbands. A hat came along with it, and none of my coworkers wanted to wear it, so I added it to my Pi gear:


Response was wonderful! By the end of the day, we’d given out 56 wristbands! I loved watching the kids working to figure out the answers. And I’ve never gotten the chance to talk to so many people about my prime factorization sweater all on the same day!

I admit this family, with Super Pi, Pi a la mode, and a Pi-rate, were my favorites:


But overall, it was simply a huge success!

I was going to fill in the answers, but instead, why don’t you add them in the comments if you know the answers? 🙂

Happy Happy Slightly-Better-Approximation-of-Pi Day!


  1. Thanks Sondra for your enthusiasm and organizing a fun Super Pi Day! We were so excited to find your fun quiz and especially to learn about your fun sweater! We hope to share some more enthusiasm at a Crazy 8s Math night. So glad to have found your online reviews too. All the best, Super Pi Family

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