Whoever knew there would be a Pi Day? And that it would become such a big deal?! But it’s brilliant! The first few numbers in pi are 3.14, so Pi Day is always celebrated on March 14 … 3/14!

I love the idea of a day to celebrate a math concept. And it’s a perfect day for Montessori educators and families, too … a day basically to celebrate the love of learning.

Pi Day is fun to celebrate for multiple ages. While preschoolers won’t really understand what pi is, they can learn that pi relates to circles, do circle activities, do pie activities, learn to identify the pi symbol, and learn the first few numbers in pi. Through the 3-period lesson, older preschoolers can learn circumference and diameter. With lots of hands-on activities, all can get the idea that math is fun!

Of course, elementary-age kids on up can learn that pi is the ratio of a circle’s circumference to its diameter, which is approximately 3.14159. They can learn that the true value of pi can’t be calculated because pi is an irrational number with decimal places that continue forever without repeating. They can do all sorts of fun Pi Day challenges. And they might even like to learn about the history of Pi Day.

*Disclosure: This post contains some affiliate links (at no cost to you).*

**Montessori-Friendly Activities for Pi Day Using Free Printables**

- Pi Day Art Project (free printable) from Tinkerlab
- Pi Day Crown (free printable) from Eye Popping Fun at Teachers Pay Teachers
- Pi Puzzle for Pi Day (subscriber freebie) from Teach Beside Me
- Pi Inspired Spring Tree Coloring Page (free printable) from Mama Smiles
- Pi Day Activities, including a Pi Chain (free printable) from Tyler McKell at Teachers Pay Teachers

Pi Day Bracelet (free printable) from Andrea Brown at Teachers Pay Teachers

Pi Day Tracing Activities (free printable) for Preschoolers from MOMtessori Life

Pi Day Skyline Activity for Kids (free printable) from Carrots Are Orange

Pi Paper Chain Activity (free printable) from Kelly MCown at Teachers Pay Teachers

Pi Day Graphing Coloring and a Game (free printable) from Meredith Anderson (Momgineer) at Teachers Pay Teachers

Pi-lentines: Sweet Pi Day Craft for All Ages (free printable) from Math Geek Mama

Numbers in P (free printable) from What Do We do All Day?

Celebrate Pi Day Like a NASA Rocket Scientist (advanced challenge with free printables) from NASA

**Montessori-Friendly Activities for Pi Day**

- Pi Day Activities, including making a Pi bracelet from Imagination Soup
- Pi Day Pie Playdough from Left Brain Craft Brain
- Pi Day Paper Plate Craft from JDaniel4’s Mom
- Pi Skyline Math Art Variations from What Do We Do All Day?

Pi Dice Game from What Do We Do All Day?

Pi Day Necklace from Momgineer

Pi Day Activities from Momgineer

Circumference Experiment from Momgineer

Watercolor Circle Art from Mess for Less

Pi Day Story and Activity from PBS Parents

Cuisenaire Rods Pi Skyline from Mama Smiles

Make Pi Day Bracelets, Pi Day String Art Project, Pi Art, and 5 Other Pi Day Activities for Preschoolers from Pink Stripey Socks

Reading the Digits of Pi in Many Languages from Miss Panda Chinese

Finding Pi with Math Sun Catchers from Our Family Code

Making Pie for Pi Day from Pragmatic Mom

Pi Day with Apple Pi from Teach Beside Me

Making Pi Day Quiche from The Full Montessori

Celebrate Math Pi Play from Little Bins for Little Hands

Pi Day Activities from Expedition Montessori

Pi Day Activities from Virtually Montessori

Pi Day Humor (Pi Day jokes for elementary age on up) from Pragmatic Mom

Race to Pi: Pi Day Card Game from Math Geek Mama

**Pi Day Activities from Montessori Schools**

Community Montessori Upper Elementary – Lesson on Pi – “Community Montessori Upper Elementary students learn how Pi was developed, what it means and when to use it.”

Understanding Pi from The New School Montessori

Elementary Students Celebrate Pi Day from Newton Montessori School

Santa Barbara Montessori School Celebrating Pi with Pie

Upper Elementary Celebrates Pi with Pie from Princeton Montessori

Pi Day from Six Rivers Montessori

**More Pi Day Resources**

2020 Update: I’ve put out a simple Pi Day activity for this year that Zoey and my toddler grandkids can all enjoy. Zoey loves the book *Sir Cumference and the Dragon of Pi* (actually the Sir Cumference books in general)! I featured our circle inset on a single inset tracing tray from Amazing Child Montessori on Amazon (I love Amazing Child Montessori’s materials!), but it isn’t available right now. There are some other metal inset tracing trays available, although they take up a bit more space on the shelf.

Free Pi Songs and Educational Videos for Pi Day

Pi Day Princess Crafts: How to Make a Pi Bracelet and Crown

Montessori-Inspired Pi Day Resources for Preschool Through Elementary

Learn more about my eBook *Montessori at Home or School: How to. Teach Grace and Courtesy*!

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