Graphic Organizer/Worksheet


This is a fun problem that has students investigate how many triangles they can create out of rods of various lengths. Students use the triangle inequality, and look for a pattern in their solutions.


  • Mathematics > General
  • Mathematics > Applied Mathematics
  • Mathematics > Calculus
  • Mathematics > Equations
  • Mathematics > Estimation
  • Mathematics > Geometry
  • Mathematics > Number Sense & Operations
  • Mathematics > Problem Solving

Education Levels:

  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12


calculus triangle triangles inequalities



Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution 3.0


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Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2009-07-25.

Component Ratings:

Technical Completeness: 3
Content Accuracy: 3
Appropriate Pedagogy: 3

Reviewer Comments:

This excellent exercise allows students to use their hands as well as the brains to count the number of triangles they can make of a set of different length rods. Students reach an analytic solution along the way.

Not Rated Yet.

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