What Is Pi?
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What Is Pi?
Grades 3 - 5
45 Minutes
Overview
What Is Pi?
Overview
In this activity, students will measure the diameters and circumferences of circles and then calculate their ratios, discovering that the ratio between the circumference and diameter is always the same.
The constant ratio is named after the Greek letter π, or pi. For most students, pi is their first example of an irrational number, or a number that is expressed as a non-repeating decimal. The value of pi is 3.1415926…and the digits continue without end.
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