What are the main characteristics of a circle?
What is the difference between radius and diameter?

The circumference is the perimeter of a circle, but how do you measure it? Watch this animation.

Now that you know the relationship between the diameter of a circle and its circumference, try answering these questions.

Note: Complete "Worksheet - Lesson 1" as you go through these questions.

Do you remember your "Which Method" project?

Now that you know how to measure the circumference use theworksheetto start working on your final project.

You can work on the final project as you go through the next lessons and learn new measurement skills.

Don’t forget to print out your enotebook