*Part of the Smithsonian’s Sally L. Steinberg Collection of Doughnut Ephemera — Click on the image to see it larger.*

When you are working on volume in your class, you can use this activity for students who might like to find some other interesting volumes — like the torus.

This self-directed activity lets students develop some understanding of a torus volume formula and practice the ability to use algebra to make the formula work better for donuts. Students then try to get a grip of how much actual cake there is in a present day donut or try to measure how much donuts have changed.

The activity: Donut-hole-evolution.pdf

CCSS: 8.G.C.9, HSA.SSE.A.1, HSA.APR.D.6, HSA.SSE.A.2, HSA.SSE.B.3, HSG.GMD.A.3, HSG.GMD.B.4, HSG.MG.A.1

For members we have an editable docx and hints and solutions.

Donut-hole-evolution.docx Donut-hole-solutions.pdf

from Yummy Math http://www.yummymath.com/2015/how-much-have-doughnuts-changed/

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