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
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