From fractions and decimals to distance and time, the humble-but-versatile number line can deepen students’ understanding of ...

Children begin to understand number place value by age 3—much earlier than previously believed, according to a new study in Child Development— and they may be ready for more substantive math lessons ...

This is part of a series of essays during the COVID-19 pandemic designed to help journalists and all public writers achieve what I have been calling “civic clarity.” That quality in prose comes from ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. This is a number line. Hmm. Where should these numbers go? Let's start with the number 50. It's right ...

While they can't pick out precise numbers, animals can comprehend that more is, well, more. A neurobiologist explored the current literature on how different animal species comprehend numbers and the ...