Pi Day, 3.14.15
(Celebrated on 3.13)
Students discussed the formula for finding the circumference of a circle. Then students measured circular things around the room. Then we compiled a list of the ratios of the circumference to the diameter of each circle. The mean of our list was 3.18, a little less than 3.14. To culminate the entire activity, students feasted on pie on PI Day 2015. Here at the pics from the world's most popular ratio, PI.
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| Pie on Pi Day |
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| I think I can measure my head. |
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| Finding the circumference first. |
Many students chose to find the circumference first. Then found the diameter.
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Student measures the circumference.
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More circumferences
Our class was eager to understand how the Greeks found the ratio of pi as 3.14. How do you think the Greeks were able to find the ratio without modern technology?
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