The Magic of a Circle

What's the big deal about a circle, you ask? A circle is MAGIC! This lesson is always THE best introduction to our geometry unit!
First, students cut out a circle. As I give directions while folding my circle, students follow along with their own circle.
We stop after each step to write their own definitions in a small Geometry Vocabulary Book (Simply made out of a half sheet of manila tag for the cover and 5 or 6 half sheets of printer paper, folded in half & stapled down the center) We use this book throughout our geometry unit, to keep adding terms and illustrations.

For homework,  students have to teach Magic Circle to an adult family member. They use their vocabulary books and the direction sheet. This is always a huge hit & my fourth graders love teaching something new to their family! Grab the directions here & give it a try!

Click on the buttons below for more terrific teaching ideas!


  1. Kathie, I absolutely love this activity. What a great way to get the kids to understand the concept of a circle and when they have to teach it to someone effectively, the concept is truly understood.

    1. Thanks, Deann! I know; I love it because the parents or older siblings are always amazed, too! :)

  2. I always love your ideas! So engaging and hands-on -- my kind of teacher! :)

  3. Kathie, I can not wait to try this with my fifth graders! It's a perfect complement to an art project we do in our geometry unit. Thank you for sharing this.

  4. Great idea! Your kids must love math time - you make it fun!

  5. You make math fun! I want to be in your class!!