Circumference and Radius

Even though middle school geometry can be tough, there’s no reason to fear the friendly circle. Big words like “circumference,” “radius,” and “diameter” may sound intimidating, but they’re just fancy words for different measurements of a circle. Here’s a quick, kid-friendly intro to those geometry terms, and a fail-safe way to calculate circumference, no matter what!

What You Need:

circumference and radius

circumference and radius

  • A piece of string
  • Tape measure or ruler
  • Pencil and paper to take notes

Click the following link to get to the rest of the lesson that was created on for middle school teachers. This is a great activity for students to interact with math and learn the formula to learn circumference and radius.

Middle School Geometry Introduction