Rolling a circle to find pi

Roll the circle to "straighten out" the circumference. Then use the diameter tool to determine the number of diameters in one circumference.

 

Jme Munn —

 
Resource Type
Activity
Tags
circle  circumference  discover  pi  unroller 
Target Group (Age)
11 – 14
Language
English (United States)
 
 
 
© 2026 International GeoGebra Institute