This tricky math puzzle is going to test your analytical and logical thinking skills. The challenge is to find the missing value. You have 5 seconds to solve the math puzzle. Your time starts now!

Researchers built AI Puzzlers with 12 ARC puzzles that kids can solve. They can then compare their solutions to those from various AI chatbots; users can pick the model from a drop-down menu.

In some novels, science or math is key to the plot. In others, the characters have a knack for math and/or science. Either way, there's plenty to choose from on our list. And for those who love to ...

Best Math Games, Websites, and Apps for Kids Last updated: June 27, 2025 by Amanda Nojadera With a focus on STEM education in schools and in the media, there are tons of apps and websites that promise ...

How a centuries-old math puzzle helped us see inside the human brain. By Steven Strogatz Photo illustrations by Jens Mortensen Each installment of “Math, Revealed” starts with an object ...

If you practise these puzzles often, you’ll likely find yourself thinking faster and more clearly in everyday life too. The 5-second math puzzle challenge Now, let’s get to the main event.