Some paradoxes don’t just challenge logic, they completely break it. These puzzles create situations where something must be both true and false at the same time. Philosophers, mathematicians, and ...

These low-floor, high-ceiling problems support differentiation, challenging all students by encouraging flexible thinking and ...

Try your hand at these tricky visual puzzles and give your brain a boost!

Mode = the most frequently occurring number in the set. (Note: if there are multiple most frequently occurring numbers in a dataset, the mode is not unique. All modes in this puzzle are unique) Range ...

Do you belong in the 1% Club? Let’s find out.In this quiz, you’ll face 30 questions inspired by The 1% Club TV game show. They start off nice and easy… but don’t get too comfortable - each round gets ...