Mark Schneider, the former chief of the U.S. Department of Education’s statistical office, lays bare the discrepancy between American high schoolers’ enrollment in tougher math classes, their alleged ...

It’s hard to imagine a world without numbers. The square footage of your house, the rent or mortgage payment, the weight you see on your bathroom scale are all examples of lower mathematics, while the ...

Brainteasers are mental exercises meant to test your mental limits, thus they're more than just puzzles. There are many distinct types of brainteasers with varying degrees of difficulty. Brain teasers ...

Are you confident in your observation skills and quick thinking? Let’s put that to the test, with a fun brain teaser that will challenge your visual perception and speed. This optical illusion isn’t ...

The great thing about geometrical-optical illusions is that you can stare and stare at them, know your brain is being fooled, and still see the illusion. So it is with the Müller-Lyer pulsating star.