A simple explanation of why dividing by zero breaks the rules of arithmetic and how mathematics defines limits to keep equations consistent and logical.

More than a century ago, mathematicians accepted a rule so intuitive it seemed harmless. But once formalized, it led to something deeply unsettling: a solid sphere could be split apart and reassembled ...

If you have ever wondered how long it will take for your savings or investment to double, there is a surprisingly easy way to estimate it. You don’t need a ...

The “4% rule” isn’t one rule — fixed percentage, fixed dollar, and inflation-adjusted withdrawals behave very differently in real markets. Ramsey’s 8% claim assumes flexible spending, not ...

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. Students, parents ...

A federal judge in California ruled Monday that the federal government is allowed to share basic information about Medicaid participants with Immigration and Customs Enforcement amid a government push ...

The big silver ball in Times Square drops just once a year. But the little dimpled ball that golfers use? It gets dropped every season, at courses near and far. The situations vary. Golfers take free ...

A new AI developed at Duke University can uncover simple, readable rules behind extremely complex systems. It studies how systems evolve over time and reduces thousands of variables into compact ...

We’ve created a generation — parents and children alike — paralyzed by numerators without denominators. A single alarming number, stripped of all context, deployed to trigger fear and compliance. And ...

Many retirees lack critical knowledge about one of the most basic Social Security rules. Not knowing this rule could affect your decisions about when to claim Social Security benefits. You could end ...

Math scores in the U.S. have been so bad for so long that teachers could be forgiven for trying anything to improve them. Unfortunately, many of the strategies they’re using could be making things ...

Regarding the Bloomberg guest editorial, “For too many kids, math isn’t adding up” (Nov. 20 print edition): Memorizing math rules does not always lead to understanding math problems. It may lead to ...