Students will measure the circumference and diameter of a variety of different circles. They will graph the class' values of (d,c) on the coordinate plane and use linear regression to approximate pi.
Before the Activity
I assign students the task of bringing in a circular object. Items such as CD's, coins, large spools or lids.
During the Activity
Please see the attached document for detailed instructions.
After the Activity
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary