# You Wanna Build a Snowman? -- Volume of a Sphere - 21st Century Math Project

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Common Core Standards
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5 MB|23 pages
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Turn your frozen classroom into a geometric extravaganza with a 21st Century Math Project! Students will take a snowball fight to a whole new level when they argue over how to determine the volume of the white orb.

In this product you will receive a 13 page PDF which includes: 2 assignments and 1 project.

- In “Cold Never Bothered Me Anyway” will begin with students brainstorming ways to determine the volume of a sphere that is whole. Let them work through this with small groups to see if any team can come up with the solution. Then, students will examine a variety of different snow balls, use given circumference measurement, determine the radius and use the radius to estimate the volume of the sphere.

-- In “Fixer Upper” students apply previous thinking and determine volumes of multi-sphered snowmen to decide which has the biggest overall volume.

-- In “You Wanna Build a Snowman?” (weather permitting :-) teams of students will be tasked to build a snowman. The challenge is to see which team can create the snowman with the largest estimated volume. This is of course estimations. (if you live in Florida feel free to do this out of white playdough :-)

You (or the class) will evaluate the “roundness” of the spheres. Each team will be given a roundness multiplier from 0.1 to 1.0. I suggest using only tenths for simplicity. 0.1 is not round at all. 1.0 is pretty darn round. Teams will use a tape measure to estimate the circumference of each ball. They will use this information to calculate their estimated volume and sketch a drawing of their snowman. Teams will multiply their estimated volume by their roundness multiplier to calculate their final score. You can decide a winner!

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21st Century Geometry –- the Entire Curriculum

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Total Pages
23 pages
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Teaching Duration
3 days
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