Jeff Smith's Math Puzzle for November 21, 2025 - ‘We fired our cannon 'til the barrel melted down, so we grabbed an alligator ...

You are participating in a holiday gift exchange with a few classmates. You each write down your own name on a slip of paper and fold it up. Then all the students place their names into a single hat.

A few years ago, a little online puzzle called Wordle unexpectedly became a global ritual. Even if you never played it, you ...

The encrypted puzzle has stumped cryptanalysts for decades, and on the eve of an auction revealing the long sought-after ...

You have an exceptionally fast brain with an IQ of 140+ if you can solve this math puzzle in just 7 seconds. Put your brain ...

The Create, Make and Share Faire showcased a wide array of art, 3D printed creations and handcrafted puzzles. From samurai ...

They're about to learn what hedge-fund investor Jim Simons proved in 1988: Having the same tools as a genius doesn't make you a genius.

Some say the reason most manhole covers are round is that a circle cannot fall through a smaller circular hole. Which of ...

Stage 5: Justify thinking. A vital habit that many students need to solidify is recontextualizing after they solve ...

Marijn Heule turns mathematical statements into something like Sudoku puzzles, then has computers go to work on them. His ...

Forever ensnared in a love-fued between 1800s literature and modern gaming, Eman Fatima tries her best to appease both her hobbies by tapping away at her keyboard and writing about her favorite games ...