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Lesson plan

Lesson 8: Measurement Error (Part 1)

teaches Common Core State Standards 7.EE.B http://www.corestandards.org/the-standards
teaches Common Core State Standards MP8 http://corestandards.org/Math/Practice/MP8
teaches Common Core State Standards MP6 http://corestandards.org/Math/Practice/MP6
teaches Common Core State Standards 7.RP.A.3 http://corestandards.org/Math/Content/7/RP/A/3

Lesson 8: Measurement Error (Part 1)

This lesson is optional. The activities in this lesson and the next all address the concept of measurement error. Any of these activities can stand on its own, although activities in the next lesson are more challenging, and students would likely benefit from doing the earlier ones first. Note that the first activity in this lesson gives students an opportunity to make measurements and analyze the size of the error. The second activity provides the percent error in the measurement in an addition context. In addition to examining accuracy of measurements carefully (MP6), students will work through examples and look for patterns (MP8) in order to hypothesize, and eventually show, how percent error behaves when measurements with error are added to one another.

As with all lessons in this unit, all related standards have been addressed in prior units. This lesson provides an optional opportunity to go deeper and make connections between domains.

Lesson overview

  • 8.1 Optional Activity: How Long Are These Pencils? (20 minutes)
  • 8.2 Optional Activity: How Long Are These Floor Boards? (20 minutes)

Learning goals:

  • Estimate a measurement and determine the largest possible percent error of the estimate.
  • Generalize (orally) a process for calculating the maximum percent error of measurements that are added together.

Learning goals (student facing):

  • Let’s check how accurate our measurements are.

Required materials:

  • four-function calculators

Required preparation:

  • Since the calculations for each of these tasks are involved, students will need access to calculators.

Glossary:

  • Access the complete Grade 7 glossary.

 

 

 

 

 

IM 6–8 Math was originally developed by Open Up Resources and authored by Illustrative Mathematics, and is copyright 2017-2019 by Open Up Resources. It is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0). OUR's 6–8 Math Curriculum is available at https://openupresources.org/math-curriculum/.

Adaptations and updates to IM 6–8 Math are copyright 2019 by Illustrative Mathematics, and are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0).

Adaptations to add additional English language learner supports are copyright 2019 by Open Up Resources, and are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0).

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