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

Start with a deck of cards. Before the trick, sneak a peek at the 10th card in the deck. Memorize it. Ask your volunteer to add the first and second digit of their number together. For instance, if he ...

The Hechinger Report covers one topic: education. Sign up for our newsletters to have stories delivered to your inbox. Consider becoming a member to support our nonprofit journalism. Think back to ...

You may draw examples from Miguel Secillano, Terence Tao, or even from Shakuntala Devi, all you want – but if getting your ...

If math never quite stuck for you, Ben Orlin is here to change that. Orlin is a math teacher and author of a new book, Math for English Majors. His mission is to help people see math in a more ...

A simple math trick which can calculate a person’s shoe size and age has taken over social media and amused many. The problem includes a series of simple questions that produces a number, whose first ...

The "shoe magic" trick is making its way around the Internet. (See above.) It's a nifty little math trick, and it does indeed work (most of the time). I will first use my own data to demonstrate. I ...

You're on the trading floor, trying to price out if a 15-year bond issued by General Electric will generate the returns needed to placate your investors. Bad news, your calculator is dead and the ...