How Pi Was Nearly Changed to 3.2

Were it not for a coincidence, Indiana might have legislated an incorrect value of pi. Scholars listen to a true story about how Indiana's House of Representatives wanted scholars in the state to learn that pi was equal to 3.2. A math professor who happened to be visiting made sure that the measure failed in the Senate.

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Instructional Ideas
  • Have groups research the history of pi as a class project
Classroom Considerations
  • It is helpful if learners are familiar with the squaring-the-circle problem
  • Pupils should know that pi is irrational
Pros
  • Thorough explanations illustrate the story
Cons
  • Slow-paced video might lose the interest of some students