**Pi Day Ideas for Middle School Math**

Maybe you have some tried and true favorites, or maybe you’re looking for some new Pi Day activities for middle school.

Whether you teach 5th or 6th grade math, elementary math or higher levels of math, Pi Day is a day that can be celebrated and used to explore the concept of Pi.

**Pi Day Activity **

In my pictures, you’ll notice I had some donuts with icing and sprinkles….I’d suggest NOT using those if you want to minimize mess:-)

**Materials for this Pi Day activity:**

1) Donuts

2) Licorice ‘strings’ for measuring (if you have tape measures that would be best, but I never had those in my classroom, so I went with the string idea)

3) Ruler

**Steps for Discovering Pi Using Donuts**

**1) Measure the circumference**of the donut using a string of licorice (regular string will work just as well….maybe better, depending on the size of the donuts. I had to use 2 pieces of licorice on my donut, which could result in less accuracy.) Once students mark the circumference on the string or the licorice, they measure that length.

**2) Measure the diameter** of the donut in the same way.

**3) Divide** the circumference by the diameter.

**Discussing the Results**

**How close are students’ results to each other?**

- Have students list the results on the board as they complete the calculations, so they can see all results.
- Perhaps find the average of all results.

**How close are the calculations to Pi?**

**What could cause students’ calculations to be less accurate than others’? **

- Were their donuts perfect circles?
- How carefully did they measure the circumference and diameter of the donut?
- How carefully did they move the string to the ruler?

Once the discussion is done, students can enjoy the donut treat!

**Pi Day Activity Posts**

**From The Colorado Classroom:**

Pi Day Fun

Pi Day – Not Just Another Day

**From Math Giraffe:**

Unique Ideas for Pi Day

**From We Are Teachers:**

31.4 Mathtastic Pi Day Activities for the Classroom

What are your favorite Pi Day activities for middle school, to explore and teach about pi?