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?

With a freshly sharpened chisel, woodworker Paul Sellers creates what he calls 'Fibonacci spiral shavings,' shaved pieces of wood that resemble Fibonacci spirals, "an approximation of the golden spiral created by draw...

In 2016, bricklayers in Teralba, NSW Australia filmed their domino-style technique for capping a concrete brick wall. The video went viral thanks to the surprising second part of the chain reaction: After the bricks f...

Twenty five years ago, physicist Robert Lang worked at NASA, where he researched lasers. He has also garnered 46 patents on optoelectronics and even wrote a Ph.D. thesis called "Semiconductor Lasers: New Geometries an...

Can you calculate how tall a building or monument is by using a ruler and the scale on a map? Mathematician Matt Parker attempts this ambitious math feat during his trip to the German capital. The structure he's aimin...

Can you calculate Pi (π) by throwing darts at a square and circle target as randomly as possible? Physics Girl's Dianna Cowern and Veritasium's Derek Muller attempt the challenge, and when "randomly" doesn't happen, t...

Mastering any physical skill takes practice. Practice is the repetition of an action with the goal of improvement, and it helps us perform with more ease, speed, and confidence. But what does practice actually do to m...

You're currently locked in the dungeon by orders of the king, but as the realm’s greatest mathematician, you've been given a chance to free yourself: If you can identify a counterfeit coin, one fake coin in a group of...

After witnessing the “violent rage” shown by babies whenever deprived of an item they considered their own, Jean Piaget – a founding father of child psychology – observed something profound about human nature: Our sen...

Thermodynamics — 'thermo' meaning heat and 'dynamics' referring to work —is the branch of physics that focuses on the relationship between heat and other kinds of energy. This video from The Royal Institution introduc...

True story about an adventure that befell Anne Parrish one June day in Paris. She was wandering through the old book stalls along the Seine with her husband who had been there before. He sat down at a table on the qua...

Search & enjoy 2,900+ smart & super-cool, “not-made-for-kids, but perfect for them” videos in the classroom or together at home. Click play and start a conversation.