Discovering Pi
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Discovering Pi
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Note: This is a read-only spreadsheet. You need to make your own copy of this Google Sheet so you can use it and edit it for your class. To make a copy simply click "File" and then "Make a copy".
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Overview:
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This activity is designed to help students explore the relationship between the distance around a circle (circumference) to the distance across a circle (diameter).
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Directions:
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Each student will need a circular object, such as a can, lid, frisbee, plate, or such. For best results the items should be a variety of sizes.
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Students will also need a tape measurer (one that can easily wrap around the circular object).
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First each student should measure the distance around their circular object.
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Next each student should measure the distance across their circular object, being careful to go directly through the middle of the circle.
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The students should then record their measurements on the spreadsheet tab titled "Data"
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The spreadsheet will automatically calculate the ratio of the circumference to the diameter for each student.
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The spreadsheet will also calculate an avarage of all the ratios from all the students.
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The students should examine their ratios to see if they notice any patterns.
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Finally switch over to the spreadsheet tab titled "Pi" to compare how close the students' average ratio is to the real value of pi.
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Created by: Eric Curts
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ericcurts@gmail.com
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www.ericcurts.com
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www.appsusergroup.org
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