6.7a Measuring Circles

Students measure circles, plot (diameter, circumference), and discuss how they know this is a proportional relationship. Learners will measure multiple objects and record in a table and plot lines to determine the relationship between circumference and diameter. Materials needed: Tape measures Many circular and/or cylindrical objects for students to measure like cans, mugs, hockey pucks, trash cans, etc. (Image credit to kidsmathgamesonline.com)

By Larry Burner