Curated Video
The Handshake Puzzle
The Handshake Puzzle: a classic mathematical puzzle coming from the topic of combinatorics, this will help develop problem-solving skills. This video provides a demonstration of how to solve the puzzle and asks learners to generalise...
Virtually Passed
Math Puzzle - climbing a mountain
It takes 4 days to climb to the peak of a mountain. Unfortunately your bag can only hold 3 days worth of food. By stockpiling food at camps along the way, what is the shortest time it will take to climb the mountain and get back down?...
Hip Hughes History
Alexander Hamilton: Economic Policies, Federalist Papers & First Bank of the United States
A broad-concept based video lecture on Hamilton's (and the Federalist Party) economic policies as Secretary of the Treasury under Washington. Includes a sprinkling on the Federalist Papers, the Whiskey Rebellion, tariffs, the National...
Curated Video
The Math of Alice in Wonderland
Alice's Adventures in Wonderland are renowned for their clever incorporation of logic puzzles and paradoxes, a testament to Charles Dodgson's (Lewis Carroll's real name) mathematical skills and training. He utilized these elements not...
Science360
Smart phone beats paper for some with dyslexia - Science Nation
Matthew Schneps is a researcher at Harvard University with a doctorate in physics from the Massachusetts Institute of Technology (MIT). He also happens to have dyslexia, so reading has always been a challenge for him. That is, until he...
Curated Video
Why Group Texts Are Annoying - The Mathematical Reason
Group texts are like emails where each person does a "reply-all" to every message. This video considers organizing a dinner with N friends and compares sending individual texts to each person versus sending a group text. We show that...
Curated Video
Game Theory: Why Cherry Picking Should Not Work In The NBA
Could cherry-picking work in the NBA? Perhaps it could work in actual play. But in theory, as I suggest using game theory, there are logical reasons why cherry-picking should not work as a dedicated strategy. Sacramento Kings "Owner...
Let's Tute
Some Stupid Math Mistakes: HCF and LCM
The video challenges the viewer's problem-solving skills with various mathematical puzzles related to a child's birthday party. The tasks range from flower arrangements to cake distribution and require quick thinking and logical...
Curated Video
The 3 Jug Riddle
You have a full 12 liter jug and empty 5 and 8 liter jugs. Can you measure exactly 6 liters? This problem dates to 1484 and was posed in the context of a milkman making a home delivery to a customer. The story goes this riddle so...
Curated Video
Guess Your Age And Shoe Size - Why The Viral Trick Works
Follow the simple instructions in the video and the result will be a fun mathematical effect! The trick got really popular a couple of years ago, but no one explained exactly why it worked. So in this video I also give the reason why the...
Curated Video
HOW SMART ARE YOU? The Stolen Bill Riddle (Viral Math Problem) - The Correct Answer Explained
This problem is making the rounds on Facebook and Twitter with thousands of people arguing about the correct answer. How smart are you? A guy walks into a store and steals a $100 bill from the register without the owner's knowledge. He...
Curated Video
A Problem WolframAlpha Didn't Solve, But You Can (615 + x^2 = 2^y)
I didn't solve this problem myself, but I felt better when I learned WolframAlpha couldn't solve it either! But there is a way to solve it using careful mathematical reasoning. Thanks to Luka Khizambareli from Georgia for suggesting this...
Curated Video
Always Remember Your Times Table (6 to 10) Using Finger Multiplication
What is 7x8? This video teaches how you can use your hands to multiply two numbers between 6 and 10 using your fingers. Here's the reason the method works: https://www.youtube.com/watch?v=eEao6-F7fz8 If you like my videos, you can...
Curated Video
Math Magic Trick: Guessing A Crossed Out Digit
Ask a friend to select a secret number. Tell them to multiply the number by 9. Let them cross out one of the digits (except 0), and then add up the remaining digits. You can guess which number was crossed out every time! Here is why....
Curated Video
Dark Knight Game Theory (Part 2): Joker Mob Negotiation
The Joker asks the mob for half the money. Why is this a reasonable amount? I've explained the scene in more detail here:...
Curated Video
AMAZING CIRCLE ILLUSION! Optical Illusion Explained With Math
This incredible optical illusion shows how circular motion can result from linear motion! The reason we see the circle has to do with high school geometry. I explain why and give a formal mathematical proof in the video. My blog post for...
TED-Ed
The Famously Difficult Green-Eyed Logic Puzzle
Ready to introduce the study of logic with what has been called "the hardest logic puzzle in the world"? What better way than with a TED-Ed video! This video describes the famous green-eyed-prisoners-on-an-island riddle by first posing...
TED-Ed
Can You Solve the Three Gods Riddle?
The Three Gods Riddle has been called the "hardest logic puzzle ever." Introduce viewers to the problem with a video that challenges scholars to find the solution.
TED-Ed
Can You Solve the Jail Break Riddle?
How can you accurately measure 45 seconds with two 60-second fuses and a lighter? A video takes learners through a logic puzzle that helps a bank robber break out of jail before the electric fence comes on.
TED-Ed
Can You Solve the Counterfeit Coin Riddle?
Math enthusiasts and riddle gurus are sure to love a mind-bending puzzle involving a king, a scale, and a counterfeit coin. Middle and high schoolers work through a video that describes a mathematician's challenge to find a false coin in...
TED-Ed
Everything Changed When the Fire Crystal Got Stolen
Viewers of a short video use the Proof by Contradiction technique; to determine which apprentice monk swallowed which crystal the group attempted to steal from the Sacred Crystal Temple.
Crash Course
The Presocratics: Crash Course History of Science #2
How did early scientists arrive at the notion that everything was made of atoms? Meet the Presocratics during the second installment in an engaging History of Science series. Viewers discover how these pioneers developed a model for...
Khan Academy
Khan Academy: Epistemology: The Puzzle of Grue
In this video, Sinan Dogramaci (The University of Texas at Austin) explains the puzzle of grue. He discusses how this puzzle undercut the attempt to formally develop inductive logic, the logic of probabilistic support.
Khan Academy
Khan Academy: Brain Teasers: Forehead Numbers Brain Teaser
Video sets up and solves the following brain teaser: Three people with infallible logic are in a room together. Each has a number painted on their forehead. The numbers are unique, greater than zero, and one number is the sum of the...