Students in Melissa Williams' kindergarten class at the Westminster School in Atlanta, Georgia, practice connecting quantities to written numbers — a key part of number sense. Credit: Holly Korbey for ...

A brain teaser is like a fun little challenge for your mind. It’s a puzzle or riddle designed to make you think creatively and critically, often in ways you’re not accustomed to. At first glance, a ...

A brain teaser is a type of puzzle or riddle designed to challenge your thinking and problem-solving skills. It often requires creative, logical, or lateral thinking rather than academic knowledge.

A seemingly straightforward maths question has left many people scratching their heads as they try to figure out the correct answer - can you figure out the solution to this equation?

Some of the most satisfying number puzzles require little mathematical know-how. In fact, cracking the one below calls for thinking that is quite nonmathematical. I don’t know where or when I first ...