This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through ...

A Korean mathematician has won international recognition for solving a geometry puzzle that had resisted proof for nearly six ...

Duah: Using puzzles, both at home and in classrooms, can restore the often-forgotten truth that learning happens in ...

The Blue Prince billiard room puzzle will give you keys as a reward, but only if you can solve the math problems that use colored segments on a dartboard instead of the usual symbols. Thankfully, you ...

The rules of Sudoku dictate that every row, column and 3×3 bolded box in the completed grid must contain the digits 1 through 9 exactly once. A surprising fact emerges from these simple rules. In ...

Construction has come to be very important for Ms. Baik, who began making crosswords during her first semester in college.