About This Lesson
Students approximate pi by measuring te circumference with string and then measuring the diameter of a circle. Then the teacher help find the average of the circumference divided by pi. Aligned to Common Core State Standard: 7.G.4
Resources
Standards
Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle.
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Nice activity connecting perimeter to area.