This FREE activity, Diameter and Radius of a Circle Digital Mystery Picture uses Google Sheets™ and can be assigned to your students using Google Classroom™. It is a fun and engaging activity that can be used for review, extra practice, a quiz, or remediation. I have used these during distance learning with my own students and they are always asking me to do more of them. Students will convert each radius to the diameter and each diameter to the radius. When they enter the answer, if it is corre