In this exploration, students will test multiple real world circles (Jar lids, cup tops, rolls of tape etc) to make a connection between a circle's diameter and pi. (Rubric included)
Students will determine how many times a string, cut to the circle's diameter, will fit around the circumference, estimating using whole numbers, fractions to 1/2 or just a + representing "a little more than."
This can be used for elementary students through older students, by adjusting how accurate or specific the estimations should be.
Students will see that the diameter goes around the circumference 3+ (a little more than 3, or 3.14 times, which is where we get Pi!)