Activity Overview
Students measure the circumference and diameter of circular objects. The measurements are used to estimate pi. A rule is established and entered into the calculator to predict the circumference of other circles.
Objectives
Investigate index notation and represent whole numbers as products of powers of prime numbers. ACMMG-197
Vocabulary
- Circumference
- Radius
- Diameter
About the Lesson
Students measure the circumference and diameter of circular objects, tabulate the data and determine the ratio between circumference and diameter of a circle. (pi) In the second part of this task students use this ratio in a formula to determine the circumference of a circle.
This activity includes teacher notes and curriculum references, two worksheets, an assessment task and suggested answer.