Circles are EVERYWHERE, and wherever there are circles, there’s math to be done!
Spark your math thinking!
- Set up your math mini spark recording page: #16 Discover Circles
- Read this circle fact page. Record 3-5 ideas on your recording page.
- Find circles in your environment and snap some pictures. Make a Pic Collage (or use another app of your choice). Add the finished project to your recording sheet.
- Get a ruler. Snap a picture of a circle that you have found with a ruler going through the center This is measuring the diameter of the circle. Calculate the circumference of the circle by taking pi (3.14) times diameter. C = πd. Record your math and the answer on your recording page
- Read the following steps to see how you can get to Pi!
Step 1: Measure the diameter of a circle. I used the top of my QT cup in the picture below. I measured the diameter as 11.5 cm.
Step 2: Measure the outside of the circle (circumference) with a string (I used a piece of making tape folded in half because I didn’t have a string handy).
Step 3: Measure the string. I measured the circumference of my QT lid as 36.5 cm.
Step 4: Divide the circumference by the diameter (36.5 divided by 11.5).
I got 3.17391304. Not too bad!
5. Do steps 1-4 with your own circle. Record all of the math on your recording page.
6. Share your math mini spark recording page with your teacher/EY coordinator.
My pi day is on the digit 67,195 of pi. My piday is the fourth in my group.
What I learned in Wonderopolis is that 22/7 is the closest simple fraction to pi
I learned on Wonderopolis that pi’s symbol is a Greek letter.
I learned that pi never ends it keeps on going
I learned 72 digits of Pi
My Pi day is 2,805