Innovative
Classroom

Center Focus

Discover Pi

  1. You will need to provide several circular objects at this center.
  2. Have your students find the circumference and diameter of each object.
  3. They can record their information in a chart with the following sections:
    • object
    • diameter [d]
    • circumference [C]
    • C / d
  4. Have them look for a relationship among the computed values in the fourth column.
  5. They should come to the conclusion that the relationship between the circumference and the diameter of a circle is constant.
  6. Discuss the value of this ratio as pi.

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