Take the pressure off of problem-solving with engaging thinking games that encourage students to work together to find ...

They baffle, delight, and frustrate millions of people around the world on a daily basis. But even the most dedicated Sudoku-solver might have never spotted this secret pattern. Mathematicians have ...

If you're a Sudoku fan, then chances are you'll love to get your hands on a good brain teaser puzzle. But with so many ...