Inequalities in Triangles

Cook up a discovery of the measurements of triangles. Using pasta, rulers, and protractors, pupils investigate the relationships between sides and angles of a triangle. Learners create examples and non-examples of triangles using different lengths of sides and observe the relationship between angles and sides in scalene triangles.

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CCSS: Adaptable
Additional Tags

Instructional Ideas

  • Have class members come up with a mnemonic or other method to remember the different inequalities
Classroom Considerations

  • Linguine, though wider, works best as it does not roll
  • Individuals need a centimeter ruler and protractor

  • Contains suggestions for assessments and extensions
  • Provides reflection questions for both the class and the teacher

  • None
Common Core