It is close enough for all practical purposes. Pupils see two methods to convert degrees Celsius to degrees Fahrenheit, one with exact numbers and another using estimation. Learners review both methods and determine when the estimation method provides solutions greater than the exact calculation.

Concepts

estimation, formulas, temperature conversion, temperature

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Additional Tags

math

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Instructional Ideas

• Provide complex computations and ask individuals to come up with a way to estimate the solution
• Lead a discussion on when an estimate is good enough and when precise calculations are needed

Classroom Considerations

• Assumes some familiarity with converting from Celsius to Fahrenheit

Pros

• Contains sample responses with feedback suggestions
• Includes a rubric for assessment guidance

Cons

• None

Common Core

MP3 MP6 7.EE.B.3 8.EE.C.8.c