A version of this puzzle originally appeared in the October 1960 issue of Scientific American. What’s the Most Distant Galaxy ...

Turn and talk with sentence stems: Give sentence starters at multiple levels: “Multiplication is…” for some students, and ...

Can you solve the elementary school problem that divided the internet in less than 30 seconds? Test your might in this ...

Many of us like to think that we’re fairly smart. But it can be a very humbling experience when you’re in the presence of ...

New research finds girls and women more often use step-by-step algorithms, while boys and men use shortcuts. Accuracy is ...

The Powerball jackpot has grown to $1.60 billion after no one won Saturday's drawing. The next drawing is scheduled for Monday, Dec. 22, 2025, at 10:59 p.m. ET. This jackpot ranks as the ...

The Powerball jackpot for the December 15, 2025, drawing is an estimated $1.10 billion. This jackpot ranks as the sixth-highest in Powerball history. The winning numbers for the Monday night drawing ...

When I was in middle school, I had a classmate who would look at trigonometric functions and yell, "I will never need these!" ...

The LLM put together a roadmap for independent wealth, but it's going to require some aggressive investing, careful ...

Nvidia faces challenges despite flashy CES showcase, with risks including competition, policy uncertainties, and valuation stretch amid a 4 trillion dollar rally, highlighting the need for ...

Mathematics education must move beyond marks and memorisation, focusing instead on reasoning, problem-solving, and creative ...

The story of pandemic learning loss isn’t just about what students missed. It’s about what adults can help them rebuild.” ...