Look for Circles Day
November 2 · Level 2 · #2002 of 2238
Look for Circles Day invites you to tune your eyes to all things round for a day: wheels, coins, clocks, plates, manhole covers. It is a game of attention that turns an ordinary walk into a small treasure hunt.
How it is celebrated: people spot circles on the way to work, photograph their finds and swap pictures with friends. A team can turn it into a contest: who can find and photograph the most round objects in ten minutes?
Every circle is tied to pi, the ratio of its circumference to its diameter, about 3.14. It is the same for a coin and for a Ferris wheel.