When elementary school students in her district struggle in math, Elizabeth Abel wants to get them support as soon as possible. That’s because addressing students’ gaps in kindergarten, 1st, and 2nd ...

Learn how to teach your kid about measurement. Learn how to teach your kid about measurement, a skill that will help children understand the world around them better. We measure stuff around us all ...

A key part—though surely not the only part—of early-grades math is ensuring students get the basic arithmetic functions down and, beyond that, making sure they’re able to swiftly and automatically ...

Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle, while the common endpoint of the two rays is ...

The original version of this story appeared in Quanta Magazine. In 1876, Peter Guthrie Tait set out to measure what he called the “beknottedness” of knots. The Scottish mathematician, whose research ...

The Hechinger Report covers one topic: education. Sign up for our newsletters to have stories delivered to your inbox. Consider becoming a member to support our nonprofit journalism. Sarah Powell, an ...