Square Root Day — an event that occurs only nine times in a century — was celebrated with a variety of math activities this week at the St. Augustine Elementary School gym. Square Root Day is ...

Today is Cinco de Mayo. And this year, the fifth of May is filled with mathematical joy. It is — Square Root Day! It all started in 1981. "I was writing a check in late August," says Ron Gordon ...

This May marks the only time a calendar has a Square Root Day in a 20-year span, with the last one being on April 4, 2016 and the next one on June 6, 2036. In fact, the day is so rare that it only ...