In this video I show you how to simplify trigonometric identities by adding fractions. I begin this lesson by reminding you ...

As nine students cluster in a semi-circle in Gail Younie’s cozy summer school classroom at Stephensen Elementary in Southwest Portland, the baggies full of brightly-colored two-dimensional Styrofoam ...

Over the three years Jordan Ellenberg was writing his book, he repeatedly encountered the same reaction to its subject. “I’d be at a party, and I’d tell someone what my book was about, and then I’d be ...

In this video I show you how to add, subtract, multiply and divide fractions by working through 52 different examples. I make ...

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. It’s common ...