Pi Day (3/14) often comes with sweet treats; Square Root Day (4/4/16 or 5/5/25, for example) has a certain numerical rhyme.

Pi Day (March 14) is a day of global mathematical celebration, but it’s not the only numerically significant calendar date.

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, who ...

Learning to calculate square roots quickly can make a huge difference in your maths exams. Whether you're doing algebra, geometry, or other topics, being fast and accurate with square roots gives you ...

As Gordon, 70, of Redwood City, noted, "These days are like calendar comets -- you wait and wait and wait for them, then they brighten up your day -- and poof--they're gone!" His suggested Square Root ...