The 9th/10th grade geometry teacher and I decided to have our students collaborate on an activity that would require them to create various circles and then measure the diameter and circumference of each in order to calculate to find pi.
We met on the field, where the students gathered ropes and tied one (at a time) to a secure pole in the ground.
The students took the circumference and divided it by the diameter (2 times the radius) and should have ended up with pi (3.14).
P.S. One of my girls got the closest, which made my boys jealous. Everything's a competition, don'tcha know.
Happy Pi Day!