This article is from Proof Positive, our friendly math newsletter that's delivered to your inbox every Tuesday afternoon. Sign up today and read it first. Last week I explained how a then 25-year-old ...

As students move up through the grades in elementary and middle school, math marches relentlessly forward—whether they’re ready or not. Math is a hierarchical field, building sequentially on prior ...

PHOENIX – Arizona Gov. Katie Hobbs signed a bill Friday to regulate how businesses must handle cash transactions in the absence of pennies, which are no longer being minted. HB 2938 mandates the use ...

Months after the last of the United States' 1-cent coins were pressed, some states are beginning to offer their own 2 cents on the penny problem by setting rounding guidance for cash purchases.

Dr. Clayton is a mathematician. Candidates for quantitative jobs — like those on Wall Street or in Silicon Valley — are sometimes asked offbeat questions such as: How many Ping-Pong balls fit in a 747 ...

McDonald’s told CBS News they’ll be taking on a rounding method when it comes to customers paying in cash. Reason being? The U.S. Mint in Philadelphia pressed its last penny on Wednesday, leaving ...

The meme exploded into youth culture with a video of a boy who delivers a giddy “six seven” at a basketball game. CAM WILDER Photo: Cam Wilder The name of this fall’s most obnoxious classmate: Six ...

24-year-old founder and CEO Carina Hong created Axiom Math in March 2025 and has recruited a team of ten employees, most of whom are from Meta, to build a math-focused AI model. Last fall, Carina Hong ...

Imagine that someone gives you a list of five numbers: 1, 6, 21, 107 and — wait for it — 47,176,870. Can you guess what comes next? If you’re stumped, you’re not alone. These are the first five busy ...

You’re at the checkout screen after an online shopping spree, ready to enter your credit card number. You type it in and instantly see a red error message ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Students in Melissa Williams' kindergarten class at the Westminster School in Atlanta, Georgia, practice connecting quantities to written numbers — a key part of number sense. Credit: Holly Korbey for ...