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Test the Fairness of US State Quarters

Main Project Information
Goal Test for the fairness of the new state quarters.
Task Flip quarters and report your heads and tails.
Where Global, anywhere on the planet

If you flip a quarter many times, it should land heads up just about as often as it lands tails up, assuming the coin is fair. But with so many different state designs, it's not clear that all U.S. quarters are fair. Help us check by taking a few moments to flip some quarters and report the results below.

How to Join


1. Begin with the quarter heads up.
2. Flip the quarter in the air and let it come to rest on a surface (don't catch it).
3. Repeat as many times as you feel like and record the results.
4. Enter the data in our survey!

Social Media
Required Gear

Quarter, computer

Ideal Age Group Elementary school (6 - 10 years), Middle school (11 - 13 years), High school (14 - 17 years), College, Graduate students, Adults, Families
Spend the Time outdoors
Type of Activity At school, At home
Tags buzz, fair, physics, quarter
Project Updated 04/21/2017