The Crystal Falls District Community Library will host a Pi Day celebration starting at 2 p.m. Saturday. As part of the event, the Library Crochet Class handmade a “Pie Afghan” to be raffled for the event. Shown is the raffle afghan that features a crocheted pie in the squares. Tickets are $5 for one or $10 for three. The winning ticket will be drawn at 3:30 p.m.; the winner doesn’t need to be present.

CRYSTAL FALLS — The Crystal Falls District Community Library will celebrate Pi Day on Saturday.

The Foucault Brothers will perform a Pi Day concert starting at 2 p.m. at the library. The duo of Roy and Paul promise to include a song or two in their line-up about “pie.”

The Friends of the Crystal Falls District Community Library will serve pie as a treat during intermission.

The Library Crochet Class handmade a “Pie Afghan” that will be raffled as a fundraiser for the event. Tickets are $5 for one or $10 for three. All tickets must be purchased during event hours, as it is only a one-day raffle.

The winning ticket will be drawn at 3:30 p.m. The ticket holder does not need to be present to win.

According to the Britannica website, “pi (π), in mathematics is the ratio of the circumference of a circle to its diameter. The Greek letter π was first used by British mathematician William Jones in 1706 to represent the ratio and was later popularized by Swiss mathematician Leonhard Euler. Because pi is irrational — not equal to the ratio of any two whole numbers, its digits do not repeat, and an approximation such as 3.14 or 22/7 is often used for everyday calculations. To 39 decimal places, pi is 3.141592653589793238462643383279502884197.

Pi Day was first celebrated in 1988 by the physicist Larry Shaw, who at the time was working at the Exploratorium, which is a science museum in San Francisco.

“The concert is free of charge, and we do hope people come out for this unique event filled with good music and good food,” Library Director Evelyn Gathu said.

The library is at 237 Superior Ave. in downtown Crystal Falls.

For more information, contact Gathu at 906-875-3344 or email egathu@crystalfallslibrary.org.