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 (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:

- Head to your local or school library and check out a book about Pi! These three titles are a good place to start.
- 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. - 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.
- 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

When

Mixed with some pie

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

Find more fun Pi facts and resources free.ed.gov.

*Dorothy Amatucci is a Digital Engagement Strategist in the Office of Communications and Outreach at the U.S. Department of Education.*

Great ideas for a variety of students. Thanks.

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

Always a fun thing to celebrate in middle school! Thanks for sharing the fun ideas.