Help students discover the relationship between diameter and circumference with cereal. As they make the connection between the number of pieces of cereal it takes to go across the circle and then around the circle it becomes easier to help them understand that the circumference is about three times the diameter.
Before the Activity
Make copies of the student worksheet and have the pages with different size circles available for students.
You may want to review entering data in lists on the calculator.
During the Activity
Pass through the classroom and observe student data collection and recording. Make sure students are using the largest part of the circle to measure the diameter.