TED Talks
Ted: Ted Ed: Can You Solve the Airplane Riddle?
Professor Fukano, the famous scientist, has embarked on a new challenge - piloting around the world in a plane of his own design. There's just one problem: there's not enough fuel to complete the journey. Luckily, there are two other...
TED Talks
Ted: Ted Ed: Winning at Rock Paper Scissors
Hannah Fry from Numberphile shares a few strategies to help you win your next game of Rock Paper Scissors. [5:48]
TED Talks
Ted: Ted Ed: Can You Solve the River Crossing Riddle?
As a wildfire rages through the grasslands, three lions and three wildebeest flee for their lives. To escape the inferno, they must cross over to the left bank of a crocodile-infested river. Can you help them figure out how to get across...
TED Talks
Ted: Ted Ed: Can You Solve the Prisoner Boxes Riddle?
Your favorite band is great at playing music but not so great at being organized. They keep misplacing their instrucments on tour.
TED Talks
Ted: Ted Ed: What Is a Vector?
Physicists, air traffic controllers, and video game creators all have at least one thing in common: vectors. But what exactly are they, and why do they matter? David Huynh explains how vectors are a prime example of the elegance, beauty,...
TED Talks
Ted: Ted Ed: How the Konigsberg Bridge Problem Changed Mathematics
You'd have a hard time finding the medieval city Konigsberg on any modern maps, but one particular quirk in its geography has made it one of the most famous cities in mathematics. Dan Van der Vieren explains how grappling with...
TED Talks
Ted: Ted Ed: How to Visualize One Part Per Million
Parts per million is a scientific unit of measurement that counts the number of units of one substance per one million units of another. But because it's hard to conceptualize really large numbers, it can be difficult to wrap our brains...
TED Talks
Ted: Ted Ed: Why the Metric System Matters
For the majority of recorded human history, units like the weight of a grain or the length of a hand weren't exact and varied from place to place. Now, consistent measurements are such an integral part of our daily lives that it's hard...
TED Talks
Ted: Ted Ed: Can You Solve the Passcode Riddle?
In a dystopian world, your resistance group is humanity's last hope. Unfortunately, you've all been captured by the tyrannical rulers and brought to the ancient coliseum for their deadly entertainment. Will you be able to solve the...
TED Talks
Ted: Ted Ed: What if Everyone Jumped at the Same Time?
If every action has an equal and opposite reaction, what kind of physical action would it take for the earth to notice us? Check out Vsauce's video on what would happen if everyone on Earth got together and jumped. [7:13]
TED Talks
Ted: Ted Ed: Can You Solve the Control Room Riddle?
As your country's top spy, you must infiltrate the headquarters of the evil syndicate, find the secret control panel, and deactivate their death ray. But your reconnaissance team is spotty, and you have only limited information about the...
TED Talks
Ted: Ted Ed: The Origin of Countless Conspiracy Theories
Why can we find geometric shapes in the night sky? How can we know that at least two people in London have exactly the same number of hairs on their head? And why can patterns be found in just about any text - even Vanilla Ice lyrics?...
TED Talks
Ted: Ted Ed: The Psychology Behind Irrational Decisions
Often people make decisions that are not "rational" from a purely economical point of view. Sara Garofalo explains heuristics, problem-solving approaches based on previous experience and intuition rather than analysis. [4:39]
TED Talks
Ted: Ted Ed: Einstein's Theory of General Relativity
How are spacetime, dark matter and gravity related? In celebration of the centennial of Einstein's theory of general relativity, this video breaks it down. [3:04]
TED Talks
Ted: Ted Ed: Should You Trust Unanimous Decisions?
Imagine a police lineup where ten witnesses are asked to identify a bank robber they glimpsed fleeing the scene. If six of them pick the same person, there's a good chance that's the culprit. And if all ten do, you might think the case...
TED Talks
Ted: Ted Ed: Can You Solve the Locker Riddle?
Your rich, eccentric uncle just passed away, and you and your 99 nasty relatives have been invited to the reading of his will. He wanted to leave all of his money to you, but he knew that if he did, your relatives would pester you...
TED Talks
Ted: Ted Ed: Can You Solve the Frog Riddle?
You're stranded in a rainforest, and you've eaten a poisonous mushroom. To save your life, you need an antidote excreted by a certain species of frog. Unfortunately, only the female frog produces the antidote. The male and female look...
TED Talks
Ted: Ted Ed: Can You Solve the Temple Riddle?
Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The walls begin to shake. The giant sandglass begins flowing with less than an...
TED Talks
Ted: Ted Ed: Can You Solve "Einstein's Riddle"?
Before he turned physics upside down, a young Albert Einstein supposedly showed off his genius by devising a complex riddle involving a stolen exotic fish and a long list of suspects. Can you resist tackling a brain teaser written by one...
TED Talks
Ted: Ted Ed: How Did Clouds Get Their Names?
Richard Hamblyn tells the history of Luke Howard, the man who classified the clouds and forever changed humanity's understanding of these changeable, mysterious objects. [5:07]
TED Talks
Ted: Ted Ed: Can You Solve the Prisoner Hat Riddle?
You and nine other individuals have been captured by super-intelligent alien overlords. The aliens think humans look quite tasty, but their civilization forbids eating highly logical and cooperative beings. Unfortunately, they're not...
TED Talks
Ted: Ted Ed: The Mathematical Secrets of Pascal's Triangle
Wajdi Mohamed Ratemi shows how Pascal's triangle is full of patterns and secrets. [4:50]
TED Talks
Ted: Ted Ed: Why Are Manhole Covers Round?
Why are most manhole covers round? Sure it makes them easy to roll, and slide into place in any alignment. But there's another, more compelling reason, involving a peculiar geometric property of circles and other shapes. Marc Chamberland...
TED Talks
Ted: Ted Ed: The Last Banana: A Thought Experiment in Probability
Imagine a game played with two players and two dice: if the biggest number rolled is one, two, three, or four, player 1 wins. If the biggest number rolled is five or six, player 2 wins. Who has the best probability of winning the game?...