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Math Curriculum

Level D
Unit: Ratios and Proportions
Key Lesson 7.2.4 Proportional Relationships and Equations

Lesson topic: Proportional relationships and equations

Instructor Materials

  • Teacher guide
  • Slides
  • Practice Problems resource
  • CCRS standard: 7.RP.2c
  • Learning goal: Generalize a process for finding missing values in a proportional relationship, and justify (orally) why this can be abstracted as y = kx, where k is the constant of proportionality. Generate an equation of the form y = kx to represent a proportional relationship in a familiar context. Write the constant of proportionality to complete a row in the table of a proportional relationship where the value for the first quantity is 1.
  • 7.2 Assessment and Practice Problems

Student Materials

Related Lessons

Review and Extend

Use these supplemental lessons if needed after teaching this key lesson.

 

 

 

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2. Adaptations and updates to IM K-5 Math are copyrighted 2019 by Illustrative Mathematics®, and are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0).

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