Lesson 7 - Circumference

To encourage your child to have fun on the Web while learning about Circumference, here is an interactive activity they can do on their own or in pairs.

Goal

Estimate, measure, and compare circumferences.

Builds Upon

Student Book pages 144-145

Instructions for Use

Finding Circumference lets your child understand that the size of the circumference is directly related to the size of the diameter.

To use Finding Circumference, click the 'Diameter/Radius' button. Click the arrow keys to increase or decrease the size of the diameter and the circumference.