When mathematical errors happen, part of the learning is to figure out how it affects the rest of your calculations. The activity has your mathematicians solving for the area of a circular pipe and taking into consideration any errors that may happen with measuring. The problem may be challenging for some learners to do on their own, so a group discussion would be beneficial as there are multiple areas of measurement error. The answer key includes a detailed commentary that can be used as teacher notes for a lesson and to help guide the discussion. 

Concepts

area, area of circles, circles, diameter

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Additional Tags

area of a circle, challenging, honors, measurement error, diameter, circle, area, math

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Pros

• Great problem for higher-level learners
• Detailed answer key

Cons

• May be challenging for some learners

Common Core

7.RP.A.3 7.G.B.4 MP2 MP6