Curated Video
Are You Stumped by LCM? Find Out How To Ace This Ladder Method Puzzle!
Welcome to Math Defined with Mrs. C, where I simplify math concepts for you! In this video, I will guide you through the ladder method to find the Least Common Multiple (LCM) of a set of numbers. Specifically, I'll tackle the numbers 2,...
TED Talks
TED: The global goals we've made progress on -- and the ones we haven't | Michael Green
We are living in a world that is tantalizingly close to ensuring that no one need die of hunger or malaria or diarrhea, says economist Michael Green. To help spur progress, back in 2015 the United Nations drew up a set of 17 goals around...
Curated Video
THANK YOU FOR 100 MILLION VIEWS! Special Puzzle: Consecutive Non-Primes
Thank you for 100 million views! To celebrate, here's a puzzle related to 100 million, sent by Karin. Find a sequence of 100 million consecutive non-prime numbers. That is, every number is composite—not a single number is a prime number....
World Science Festival
Mysteries of the Mathematical Universe
Mathematical mysteries have challenged humanity’s most powerful thinkers and inspired passionate, lifelong obsessions in search of answers. From the strangeness of prime numbers and the nature of infinity, to the turbulent flow of fluids...
Gresham College
The Four Cubes Problem - 2
4 cubes with 4 colours across their 6 faces, 82,944 possible ways of stacking them - how do we stack them to have all four colours on each side of the stack? This is the problem of Instant Insanity, to which there are two distinct...
Religion for Breakfast
How Did the New Testament Form?
In this episode we examine the topic: How Did the New Testament Form?
But Why
Why Do We Laugh?
People of all ages laugh, even babies as young as a few months old, although the things they laugh at change as they reach different stages of life. Scientists believe that laughter is a way for people to socialize, have fun, and...
Curated Video
Why Mathematicians Love 69,720,375,229,712,477,164,533,808,935,312,303,556,800
The number N = 69,720,375,229,712,477,164,533,808,935,312,303,556,800 is special - it is the smallest number that has all numbers 1 to 100 as factors. The puzzle: what is the prime factorization of N? Watch the video for a solution....
Curated Video
Why Facebook Invented A New Time Unit Explained With Math
On January 22, 2018, Facebook Open Source tweeted to announce the "flick," a unit of time to help sync various video frame rates and audio sampling frequencies. The media loved the story and some explained the idea. But no one explained...
Curated Video
The Math Equations In The Simpsons Futurama Crossover
The episode is "Simpsorama", season 26, episode 6. http://en.wikipedia.org/wiki/Simpsorama Here are some links about each problem. Fermat's Little Theorem http://en.wikipedia.org/wiki/Proofs_of_Fermat's_little_theorem Prime Number...
Curated OER
What's a Prime Number?
What is a prime number? Is zero a prime number? Is one a prime number? No?! Is two a prime number? Yes. So what is the definition of a prime number? A prime number is a number that can only be divided by 1 and itself. Watch this short...
Curated OER
How Do You Find the Greatest Common Factor If There are No Common Factors?
Use prime factorization to find the greatest common factor of three given values. Okay. But what if there doesn't seem to be any integer that is common in all three given values? Well, then, the greatest common factor must be 1. Not sure...
Curated OER
What's a Factor?
The instructors shows how to identify factors by breaking apart the numbers and variables of a product.