NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

There are two rules to remember when adding or subtracting fractions. The fractions need to have a common denominator. This means the denominator has to be the same. You only need to add or subtract ...

If the mention of algebra conjures bad memories of math classes, a Python library called SymPy could change your mind about ...

Which order should you add two numbers? Numberblocks Two and Three have the answer: you can add two bananas to three bananas, or three bananas to two bananas and the total stays the same. It's five ...