My second grader can run through long, complicated equations in his head, and I can barely wrap my mind around the new way they are teaching him to do it. I do, however, have basic math skills, and I ...

Two students in Danielle Adler’s kindergarten class at Marcus Hook Elementary School in Marcus Hook, Pa., prepare for an addition problem. Credit: Holly Korbey for The Hechinger Report The Hechinger ...

Many animals have a sense of quantity, but they don't count or do math the way humans do. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The ...