Day 105–Popcorn Cylinder

8th grade has math right before lunch, so when I offered them popcorn, they were all for it….until they had to decide which cylinder they’d choose to fill. And no, “both” is not an option, nor is cylinder “C” which they suggested be made by putting both 8 1/2 x 11 sheets of paper together.

We voted. One student took A, “just to be different.” Four selected cylinder B as the larger one. Nine students said it didn’t matter because they were the same size. Three were undecided. Here are some of their explanations.




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