Sew up learning on writing rules for patterns with an assessment task that has pupils investigate the number of triangles needed for cushions of different sizes. They then use the data to generate a rule for a cushion of any size.

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CCSS: Designed
Instructional Ideas

  • Use the resource as a summative assessment task
Classroom Considerations

  • Learners need to have previous experience with writing linear expressions to model patterns
  • Task could be modified for use in eighth grade

  • Scaffolding provides entry point to solution
  • Resource includes an answer key

  • The resource contains spelling errors
  • Resource indicates that a sheet of square dot paper is included, but no such sheet exists