Informally Fitting a Line

Discover how trend lines can be useful in understanding relationships between variables with a lesson that covers how to informally fit a trend line to model a relationship given in a scatter plot. Scholars use the trend line to make predictions to finish the module.

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CCSS: Designed
Instructional Ideas

  • Have pupils research data on the Internet to draw scatter plots and trend lines
Classroom Considerations

  • Drawing of trend lines is informal, so answers may vary
  • Learners need knowledge of linear relationships and trend lines from previous lessons
  • Eighth lesson in the series of 16

  • Gives scaffolding tips throughout the lesson
  • Teacher guide indicates where to look for mathematical practices

  • None
Common Core

Included Materials - Join to Access

  • Informally Fitting a Line (Doc)
  • Informally Fitting a Line (PDF)
  • Informally Fitting a Line (Doc)
  • Grade 8 Module 6: Teacher Materials
  • Grade 8 Module 6: Student Materials
  • Grade 8 Module 6: Copy Ready Materials
  • Math Fluency Support for Grades 6-8
  • Answer Key