This is another printable in our Measure-Me-Math Lapbook series. Students learn about a circle's circumference, diameter, and radius and how to measure each. The Circle Stack-the-Facts math booklet provides some fun circle facts, an opportunity to trace & color, and a flap with definitions of and how to measure circumference, diameter, and radius. The Measuring Circles booklet that gives the students an opportunity to put their measuring knowledge into action - three sections with opportunities to measure circumference, diameter, and radius. The Measure-Me-Math inserts are a great addition to a circle math center, a measurement math lesson, or as a stand-alone activity.