Math problems aren’t always easy to figure out. They require practice and experience to master, especially if you don’t have much time to spend learning. These seemingly simple numbers and equations ...

Counting will get you nowhere. Try a little combinatorics instead. By Kenneth Chang A couple of weeks ago, I wrote about a viral math problem — 8÷2(2+2) = ? — that drew the disdain of many ...

Oh, sorry! Did we greet you the wrong way? Well if so, then you are going to enjoy these math riddles even more today. When it comes to math, not everyone smiles. Not everyone raised their hands in ...

Sure, riddles are fun if you’re a fan of clever wordplay. But there’s something so uniquely enjoyable about a good visual puzzle. So today, we’re calling all brainteaser aficionados: How many ...

Like Jacob, Seth has a vision. Not of angels, but of 30° –60°–90° triangles. The triangles are drifting down from the Empyrean heaven and forming a large triangle. An infinite number of triangles ...

Well, what is the best way to cut a sandwich in half? Surely triangles don't really have "more sandwich," right? That's geometry and the law of conservation of matter. But something about the ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? This triangle brain teaser isn’t new—shoutout to Popsugar for unearthing it a couple ...

Adjust the colors to reduce glare and give your eyes a break. Use one of the services below to sign in to PBS: You've just tried to add this video to My List. But first, we need you to sign in to PBS ...

In fourth grade, students focus most on using all four operations - addition, subtraction, multiplication, and division - to solve multi-step word problems involving multi-digit numbers. Fourth-grade ...