This week brings us more daylight in the late afternoon, the promise of warmer temperatures, and an extra special day called Pi Day!
You might wonder why Pi Day is celebrated on March 14th. Well, the answer lies with the number. Pi is the ratio of the circumference of a circle to the diameter of the circle. What??? All you do it measure around the circle, then divide that by how wide the circle is. So if you have a circle that is 5 inches around, and the measure from side to side is about 1.6 inches, then 5 divided by 1.6 gives us the number Pi, which in this case, is 3.125 (pretty close to 3.14!).
It's actually pretty simple, but what's awesome is that Pi is a constant number, the same for all circles, no matter how big or small. Go ahead, try it yourself!
Here are some activities that can help you celebrate Pi Day:
Read Circles by David Adler and learn characteristics of circles
Make Variable Pizza Pi from Eat Your Math Homework: Recipes for Hungry Minds by Leeza Hernandez
Print out this cool pennant banner and let the kids color as many digits of Pi as they can (the file is free, but you'll have to register for an account)
Create a Pi Day suncatcher craft with a paper plate and circles galore
Enjoy Pi Day!