Pi Day Investigation {Pi and Circumference}



This fun and hands-on investigation will give kids a chance to discover the value of the number pi, see the relationship between a circle’s circumference and diameter, as well as understand the formula for the circumference of a circle.

This is fun for “Pi Day,” but could be used any time. 🙂

Materials needed:

  • Circular objects
  • Measuring tape or ruler
  • String (if you’re using a ruler)

Included in this download:

  • Student recording page
  • “Think about it” discussion questions

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