Five Excellent Ways to Celebrate Pi Day on 3/14

It’s time to celebrate Pi! And if the very thought of the irrational number is making you hungry for knowledge, you’re not alone.

Pi Day

(Photo courtesy of djwtwo on Flickr.)

Pi Day (3/14) is the unofficial holiday dedicated to pi. Pi is the ratio of a circle’s circumference to its diameter, and it’s an irrational number, so it can’t be expressed as a simple fraction of two integers. The number starts out with 3.14, but it goes on for infinity!

This special day is also the perfect time to plan STEM-themed activities for your classroom or with your children at home.

Here are five excellent ways to celebrate Pi:

          1. Head to your local or school library and check out a book about Pi! These three titles are a good place to start.
          2. Demonstrate Pi in the real world. San Francisco’s Exploratorium has an entire webpage devoted to simple and easy hands-on activities that introduce the concept of Pi using everyday objects.
          3. Make Pi plates. Have students trace the Pi symbol on a piece of construction paper and then cut it out a glue it to a paper plate. Decorate the border of the plate with Pi’s digits.
          4. Write a Pi-ku, a math version of the traditional 5-7-5 syllabic haiku. A Pi-ku of course, follows a 3-1-4 syllabic pattern.

For example:
Math is fun
Mixed with some pie

 5. And, of course, you could always bake a Pi-themed pie!

Find more fun Pi facts and resources

Dorothy Amatucci is a new media analyst in the Office of Communications and Outreach


  1. Great article – with practical, fun ideas, for elementary, as well as older students. Thanks for the additional references!

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