In this lesson on circumference of a circle, students will develop an understanding of how the number π relates to a circle’s diameter and circumference. The lesson will begin with a hands-on activity where students measure circular objects to observe the relationship between circumference and diameter. Students will arrive with the formula by analyzing the pattern from the data they collected from the activity. As a group we will complete model problems and then student will complete independent practice . Lastly student will complete an exit ticket to demonstrate their ability to calculate circumference given different circle dimensions.