# Lesson: Circumference

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### Lesson Objective

SWBAT find the circumference of a circle.

### Lesson Plan

 State Standard: 5.M.4 Standard Name: Area and Perimeter (circles) Objective: I can find the circumference of a circle. Essential Question: How do circle measurements relate to one another? Word Wall Words: circumference Do Now: Review of polygons Opening: Yesterday we labeled a circle and talked about the radius and diameter. Today we will find the circumference. Direct Instruction: The circumference of a circle is the distance around the outside of the circle. It is kind of like finding the perimeter of a circle. To find the circumference, we use a formula. The formula is C=∏ x d. Pi is the ratio of the circumference of a circle to its diameter. It is equal to approximately 3.14.   If the diameter of a circle is 6, I would multiply 6 x 3.14 to find the circumference. If you are given the radius, find the diameter and then multiply by pi. Guided Practice: Let’s do the first few together. Independent Practice: Now you will practice on your own. Math Journal: Closing: Exit ticket: Draw a circle with a radius of 5. Find the circumference. Center Options: See independent practice. Differentiation:

### Lesson Resources

 Circumference Practice   Classwork 748