Assessment

Triangular Frameworks

Curated and Reviewed by Lesson Planet

What did the triangle say to the circle? You're pointless! Class members will get the point when they investigate relationships between side lengths of a triangle using the Triangle Inequality Theorem. Pupils then create an algebraic expression for the number of possible triangles given a condition on the longest side.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Provide manipulatives, such as spaghetti sticks, for struggling learners
Classroom Considerations
  • Be sure learners understand that you expect algebraic generalizations
  • Learners should already have an understanding of the Triangle Inequality Theorem from 7.G.2
Pros
  • Easily understood context helps cement understanding
Cons
  • Inconsistent punctuation and formatting
  • Vague directions may lead to many questions or confusion