Every few months, the Internet eats itself over some kind of viral riddle or illusion, each more infuriating than the last. And so, like clockwork, this maddening math problem has gone viral, ...

Many Americans close to retirement ask one big question: when should I take Social Security — 62, 65, or 70. This choice matters because the monthly Social Security check gets bigger for every year ...

Picking when to start Social Security can feel like gambling with your future. You could start early and pocket money now, or ...

The idea of an animal that can count or do math might sound like something out of a viral news story or TikTok video. But a sense of quantity, sometimes called "numerosity," appears across a ...

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 ...