Pi, that illustrious, irrational, and infinite mathematical constant, was celebrated at the Williamsburg local school district March 14.

Pi Day, as it has come to be known, has become a national math holiday and the Williamsburg middle and high school students have been participating in the event for the last eight years.

“We started eight years ago with the students bringing in homemade pies,” said math teacher Beth Kellerman. “It has just gotten bigger and bigger.”

One class of Williamsburg math achievement students, who celebrated Pi during the whole week with activities concentrating on circles and their formulas, were challenged by Kellerman to open up a business, sell Pi T-shirts, and give some of the proceeds to the leukemia/lymphoma society – but with a sweet twist.