Number lines can help you see where a number is compared to another number. You can create a number line that goes up to any number. You can then look at the part of the number line that's the most ...

Experiments on domestic chicks shed light on the links between brain lateralization and the left-to-right mental number line.

The ancient Greeks wanted to believe that the universe could be described in its entirety using only whole numbers and the ratios between them — fractions, or what we now call rational numbers. But ...