How high can you count on your fingers? It seems like a question with an obvious answer. After all, most of us have ten fingers — or to be more precise, eight fingers and two thumbs. This gives us a total of ten digits on our two hands, which we use to count to ten. But is that really as high as we can go?

Your team has developed a probe to study an alien monolith. It needs protective coatings — in red, purple and green — to cope with the environments it passes through. Can you figure out how to apply the colors so the ...

You’ve found Leonardo da Vinci’s secret vault, secured by a series of combination locks. Fortunately, your treasure map has three codes: 1210, 3211000, and… hmm. The last one appears to be missing. Can you figure out ...

This triangle is acute. Right triangle, obtuse. Isosceles, scalene. Equilateral, now you know the whole team.
Learn the basics of triangles with Types of Triangles, a catchy and informative math music video from th...

Imagine trying to use words to describe every scene in a film, every note in a song, or every street in your town. Now imagine trying to do it using only the numbers 1 and 0. Every time you use the Internet to watch a...

How can you use math to astonish your friends and family? Try the 21-card trick. Filmed for Numberphile, UC Davis Department of Mathematics Postdoc Anastasia Chavez demonstrates step-by-step how this trick works with ...

Dutch artist Piet Mondrian’s abstract, rectangular paintings inspired mathematicians to create a two-fold challenge. Can you solve the puzzle and get to the lowest score possible?
Board game and puzzle designer and...

After months of travel, you’ve arrived at Duonia, home to the famous temple that’s the destination of your pilgrimage. The walk from the welcome center to the temple isn't a long one ... but there’s a problem. Can you...

You’ve been chosen as a champion to represent your wizarding house in a deadly duel against two rival magic schools. Your opponents are a powerful sorcerer who wields a wand that can turn people into fish, and a power...

This delightful little device brings to life the statistical concept of normal distribution. As you rotate the Galton Board on its axis, you set into motion a flow of steel beads that bounce with equal probability to ...

The Four-Legged Zoo" is one in a series of Multiplication Rock episodes by Schoolhouse Rock! that were written and sung by Bob Dorough. Via wikipedia, the animated shorts "were created after ad agency co-chairman Davi...

Search & enjoy 4,000+ smart & super-cool, “not-made-for-kids, but perfect for them” videos in the classroom or together at home, curated by Rion Nakaya with her 7 & 10 year olds. Click play and start a conversation.