Lesson Plan


This activity has students investigate which fits better, a square peg in a round hole or a round peg in a square hole.


  • Mathematics > General
  • Mathematics > Calculus
  • Mathematics > Geometry
  • Mathematics > Measurement
  • Mathematics > Problem Solving
  • Mathematics > Trigonometry

Education Levels:

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


geometry measurement coordinate conjecture proportions proportion



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 2009-07-26.

Component Ratings:

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

Reviewer Comments:

A problem neatly stated and solved. The merit of this problem is that it measures the conditions of a common phrase, which is always pleasing. Statements like the solution of this problem are known commonly as "Rules of Thumb", that is, rough numerical truths about the real world.

Not Rated Yet.

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