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Measuring Up: “Perfect” Rulers

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  • Activity Description
  • Topics Covered
  • Session Styles
  • Mathematical Practices
Is it possible to measure all possible integer lengths on a ruler without marking every integer on that ruler? This is an engaging and challenging problem for all. Beautiful mathematics can be revealed while delving deeper into this seemingly easy question.

Photos & Videos

Virtual Tools

Ruler Investigation Tool

A digital tool to allow the user to choose a length and the location of marks, created by Columbus Math Circle members.
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