"The kid starts cackling, and I realise he invented his own question in order to trick me into saying it," the teacher wrote.

Are you among the top 15% of brainiacs in the country who can solve this math problem? Brainteasers and puzzles are an excellent way to keep your mind as healthy as the rest of your body. They can ...

Many American consumers fail to grasp the basic math of inflation, according to a large-scale study of financial literacy. The FINRA Investor Education Foundation, a financial education nonprofit, ...

Mr. Wilkinson is the author of “A Divine Language: Learning Algebra, Geometry, and Calculus at the Edge of Old Age.” I am surprised at this late stage, in my 70s, to be thinking about God. In my ...