Search Results: "Mathematic"

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10:07
The Beauty of Algebra

488 views / 0 likes - added 9 years ago

Why the abstraction of mathematics is so fundamental More free lessons at: http://www.khanacademy.org/video?v=kpCJyQ2usJ4
14:42 Popular
The Golden Ratio

718 views / 1 likes - added 9 years ago

An introduction to one of the most amazing ideas/numbers in mathematics More free lessons at: http://www.khanacademy.org/video?v=5zosU6XTgSY
09:03 Popular
The Ideal Gas Law: Crash Course Chemistry #12

1,152 views / 0 likes - added 9 years ago

Gases are everywhere, and this is good news and bad news for chemists. The good news: when they are behaving themselves, it's extremely easy to describe their behavior theoretically, experimentally and mathematically. The bad news is they almost never beh
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pH and pOH: Crash Course Chemistry #30

906 views / 1 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.
05:11
Is Math Discovered Or Invented? - Jeff Dekofsky

613 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/is-math-discovered-or-invented-jeff-dekofsky Would mathematics exist if people didn't? Did we create mathematical concepts to help us understand...
12:23 Popular
Would Headlights Work At Light Speed?

716 views / 0 likes - added 8 years ago

If you were driving at the speed of light and turned on your headlights, what would happen? Twitter: http://www.twitter.com/tweetsauce Instagram: http://www.instagram.com/electricpants Sources and extras below!! Thanks to Jude for asking me this question
13:32
What Is The Speed Of Dark?

656 views / 1 likes - added 8 years ago

twitter: http://www.twitter.com/tweetsauce instagram: http://www.instagram.com/electricpants facebook: http://www.facebook.com/VsauceGaming SOURCES BELOW: this is the video where I talk about THE SPEED OF PUSH: https://www.youtube.com/watch?v=Do1lm9IevYE
02:35
Is The Universe Entirely Mathematical? Feat. Max Tegmark

594 views / 0 likes - added 8 years ago

Thanks to Max Tegmark for writing & narrating this video, you can listen to his new book at http://www.audible.com/minutephysics OR find it on Amazon http://www.amazon.co.uk/Our-Mathematical-Universe-Ultimate-Reality/dp/1846144760 Thanks to Radiolab for l
12:56 Popular
Monkeys And Coconuts - Numberphile

726 views / 0 likes - added 8 years ago

An old problem which baffled many people. Featuring Dr Tony Padilla. Editing and animation in this film by Pete McPartlan - https://twitter.com/petemcpartlan NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com
11:34 Popular
That Viral Math Problem (Cheryl's Birthday) - Numberphile

732 views / 0 likes - added 8 years ago

Simon Pampena gives his take on THAT viral math problem from Singapore. EXTRA FOOTAGE for this video: http://youtu.be/Mj-YngjjpJg Simon on Twitter: https://twitter.com/mathemaniac NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: h
03:15 Popular
Should You Catch A Tossed Coin? - Numberphile

1,559 views / 0 likes - added 8 years ago

Randomness expert (and former magician) Persi Diaconis on whether it is best to catch a coin or let it fall to the ground. Main video: http://youtu.be/AYnJv68T3MM Extra footage: http://youtu.be/9RKKoXw7wJw Superbowl coin tosses: http://youtu.be/bFfSfzjhfC
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05:48 Popular
Winning At Rock Paper Scissors - Numberphile

866 views / 0 likes - added 8 years ago

Squarespace: http://www.squarespace.com/numberphile This video features Hannah Fry - https://twitter.com/fryrsquared More on this topic (and lizards): http://youtu.be/Z8lv2vy5vco And even more on this topic: http://youtu.be/ygHwBxWyI6E The paper: http://b
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16:51 Popular
Euclid's Big Problem - Numberphile

907 views / 0 likes - added 8 years ago

Trisecting angles and calculating cube roots was a big problem for Euclid and his cohorts. Discussed by Zsuzsanna Dancso at MSRI. TRISECT WITH ORIGAMI: http://youtu.be/SL2lYcggGpc CIRCLE THE SQUARE: http://youtu.be/CMP9a2J4Bqw NUMBERPHILE Website: http://
04:46 Popular
The Mighty Mathematics Of The Lever - Andy Peterson And Zack Patterson

1,234 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-mighty-mathematics-of-the-lever-andy-peterson-and-zack-patterson Archimedes once said “Give me a place to stand, and I shall move the Earth.” While the idea of a person moving such a huge mass on their own m
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04:11
Is Our Climate Headed For A Mathematical Tipping Point? - Victor J. Donnay

628 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/is-our-climate-headed-for-mathematical-chaos-victor-j-donnay Scientists have warned that as CO2 levels in the atmosphere rise an increase in Earth’s temperature by even two degrees could lead to catastrophic eff
04:39 Popular
The Unexpected Math Behind Van Gogh's

770 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-unexpected-math-behind-van-gogh-s-starry-night-natalya-st-clair Physicist Werner Heisenberg said, “When I meet God, I am going to ask him two questions: why relativity? And why turbulence? I really bel
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18:39 Popular
Billionaire Mathematician - Numberphile

751 views / 0 likes - added 8 years ago

Full length version of this interview (one hour): https://youtu.be/QNznD9hMEh0 More about The Simons Foundation: http://bit.ly/SimonsFoundation James Harris Simons has been described as "the world's smartest billionaire", amassing a fortune through the cl
07:10
The 'Everything' Formula - Numberphile

668 views / 0 likes - added 8 years ago

Matt Parker discusses Tupper's Self-Referential Formula. Matt's book on Amazon (US): http://bit.ly/Matt_4D_US Matt's book on Amazon (UK): http://bit.ly/Matt_4D_UK A little bit of extra footage from this video: http://youtu.be/wx22jdwn5zQ Thanks to our Pat
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The Best (and Worst) Ways To Shuffle Cards - Numberphile

844 views / 0 likes - added 8 years ago

Persi Diaconis (Stanford University) on card shuffling. See full description for links to additional videos and detailed papers. EXTRAS FROM THIS INTERVIEW --- 1/3: https://youtu.be/1jfm42Qd7Qw --- 2/3: http://youtu.be/c_Hunaf0tWw --- 3/3: http://youtu.be
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The Useless Number - Numberphile

1,066 views / 0 likes - added 8 years ago

One of the first people to stumble over imaginary numbers (namely the square root of -15) thought it was "subtle" and "useless". Featuring Barry Mazur. Extra footage from this interview: http://youtu.be/i4GCd2xOCDg Barry's book on this topic: http://bit.l
03:44
Something Special About 399 (and 2015) - Numberphile

617 views / 0 likes - added 8 years ago

It is the lowest Lucas-Carmichael Number... Featuring Ed Copeland. More about Ed's real work: http://bit.ly/CopelandGoesLong With thanks to these Patreon supporters: Herschal Sanders (from Susan) Today I Found Out Lê OK Merli Alex Bozzi Thomas J Petersen
01:54 Popular
1 To 200 On Google Image Search - Numberphile

802 views / 0 likes - added 8 years ago

Results of Google Image Searches for the numbers 1 to 200 (written as numerals). Music by Alan Stewart. Website: http://www.numberphile.com/ Discuss on Reddit: http://redd.it/2zozor Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile
13:40 Popular
The Amazing Heptadecagon (17-gon) - Numberphile

800 views / 0 likes - added 8 years ago

More on the math behind this: http://youtu.be/oYlB5lUGlbw Professor David Eisenbud - director of MSRI - on the amazing 17-gon and its link to Gauss. See end of this video for a bit MSRI's address at 17 Gauss Way! NUMBERPHILE Website: http://www.numberphil
03:14 Popular
Rock Paper LIZARDS - Numberphile

802 views / 1 likes - added 8 years ago

Hannah Fry on parallels between the game "rock paper scissors" and lizards in nature. PART ONE: http://youtu.be/rudzYPHuewc EXTRA FOOTAGE: http://youtu.be/ygHwBxWyI6E Lizards by Pete McPartlan NUMBERPHILE Website: http://www.numberphile.com/ Numberphile o
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How To Always Win At Dots And Boxes - Numberphile

811 views / 0 likes - added 8 years ago

Create your site on Squarespace: http://www.squarespace.com/numberphile This video features 'games legend' Elwyn Berlekamp. Elwyn's book on Dots and Boxes: http://bit.ly/DotsBoxesBook Elwyn's Winning Ways on Amazon: http://amzn.to/1BIA6UB Extra footage ab
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How To Trisect An Angle With Origami - Numberphile

746 views / 0 likes - added 8 years ago

Zsuzsanna Dancso trisects an angle using origami - follows on from this video about Euclidean geometry: http://youtu.be/6Lm9EHhbJAY Special thanks to the Patreon supporters listed below: Herschal Sanders (from Susan) Lê OK Merli Alex Bozzi Thomas J
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Down To Earth: Crash Course Kids #4.2

1,623 views / 0 likes - added 8 years ago

In this episode of Crash Course Kids, Sabrina talks about why things on the bottom of the Earth, don't just fall off into space. Plus... PENGUINS! This first series is based on 5th grade science. We're super excited and hope you enjoy Crash Course Kids! /
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Defining Gravity: Crash Course Kids #4.1

1,956 views / 7 likes - added 8 years ago

So, if gravity pulls everything down, then why don't things on the bottom of the Earth get pulled down into space? In this episode of Crash Course Kids, Sabrina talks about gravity and explains that when we talk about gravity pulling things down, what we
03:55 Popular
Over (to) The Moon: Crash Course Kids #13.2

1,026 views / 1 likes - added 8 years ago

Sabrina gets a new set in this episode of Crash Course Kids. Do you want to be an astronaut? Would you like to someday walk on the moon? Well, you better learn a little about gravity so you can escape from Earth and head into space. Today, Sabrina chats w
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The Great Escape: Crash Course Kids #13.1

1,235 views / 2 likes - added 8 years ago

Do you know how many people have been to the moon? Only 12! Part of the reason it's so few is because of how difficult it is to escape Earth and get into space in the first place. In this episode of Crash Course Kids, Sabrina talks about gravity, escape v
13:29
Numbers With Meaning - Numberphile

693 views / 0 likes - added 8 years ago

Thanks to: http://www.audible.com/numberphile This video features Dr Sarah Wiseman from UCL on numbers that are familiar - and things that can go wrong in our brains. Editing and animation in this video by Pete McPartlan. Books available on Audible by Num
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Klein Bottles - Numberphile

844 views / 0 likes - added 8 years ago

Cliff Stoll is passionate about Klein Bottles. Don't miss the video about how he uses a robot to store 1,000 bottles UNDER his house... https://youtu.be/-k3mVnRlQLU More videos on Klein Bottles: http://bit.ly/KleinBottles ACME Klein Bottles: http://bit.ly
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Why Raindrops Are Mathematically Impossible

1,419 views / 1 likes - added 8 years ago

Rain shouldn't happen, according to basic physics. Click here to watch the MinuteEarth video about rain: https://www.youtube.com/watch?v=87v_9Bud7vw This video supported by Audible.com/minutephysics Thanks to the following Subbable subscribers for making
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07:14 Popular
How To Win A Guessing Game - Numberphile

887 views / 0 likes - added 8 years ago

A clever use of random numbers to improve your odds in a number guessing game. Alex Bellos Books: http://bit.ly/BellosBooks Monty Hall problem: http://bit.ly/MontyHallProb NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://ww
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11:56
Did The Past Really Happen?

671 views / 2 likes - added 8 years ago

Greece is full of wonderful new things and wonderful old things. But when WE become old things, will our ruins also be tourist attractions? **Sources and extra info below!!** me on twitter: http://www.twitter.com/tweetsauce on instagram: http://www.instag
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This Is A Human Woman -- BiDiPi #49

919 views / 0 likes - added 8 years ago

BiDiPi is a showcase of incredible creations from amazing artists. TWITTER: http://www.twitter.com/VsauceTwo *** CLICK "SHOW MORE" FOR LINKS TO EVERYTHING *** BUILD IT Li Hongbo’s Paper Sculptures https://www.youtube.com/watch?v=Pik2BcQF8ZQ https://www.yo
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Nonlinear Equation Graphs — Harder Example | Math | New SAT | Khan Academy

1,244 views / 0 likes - added 8 years ago

Watch Sal work through a harder Nonlinear equation graphs problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p8-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewS
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Radicals And Rational Exponents — Basic Example | Math | New SAT | Khan Academy

1,477 views / 0 likes - added 8 years ago

Watch Sal work through a basic Radicals and rational exponents problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p3-harder?utm_source=YT&utm_medium=Desc&utm_campaign
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Zap, Crackle And Pop: The Story Of Electricity

1,107 views / 1 likes - added 8 years ago

Dr Marty Jopson leads us through the story of electricity in a show buzzing with demonstrations. Have we tamed electricity? From the Ancient Greeks to Faraday’s genius, this show puts the awesome back into electricity. Subscribe for regular science videos
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How Not To Be Wrong: The Power Of Mathematical Thinking

870 views / 0 likes - added 8 years ago

The maths we learn in school can seem like a dull set of rules, laid down by the ancients and not to be questioned. Jordan Ellenberg shows how wrong this view is through stories that show the power of mathematical thinking. Subscribe for regular science v
03:59 Popular
Why Do Honeybees Love Hexagons? - Zack Patterson And Andy Peterson

836 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-do-honeybees-love-hexagons-zack-patterson-and-andy-peterson Honeybees are some of nature's finest mathematicians. Not only can they calculate angles and comprehend the roundness of the earth, these smart ins
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58:25
Birth Of A Theorem - With Cédric Villani

545 views / 0 likes - added 8 years ago

Where does a mathematician’s inspiration come from? Fields Medal winner Cédric Villani takes us on a fantastical adventure through the beautiful, mysterious world of mathematics. Subscribe for regular science videos: http://bit.ly/RiSubscRibe What goes on
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Four Dimensional Maths: Things To See And Hear In The Fourth Dimension With Matt Parker

712 views / 0 likes - added 8 years ago

Matt Parker, comedian and mathematician, shows how four-dimensional shapes appear a 3D world in this hands-on talk, featuring what is possibly the world's nerdiest knitted hat! Subscribe for regular science videos: http://bit.ly/RiSubscRibe Discover how t
57:34
Topology, Geometry And Life In Three Dimensions

670 views / 0 likes - added 8 years ago

If you imagine a three dimensional maze from which there is no escape, how can you map it? Is there a way to describe what all possible mazes look like, and how do mathematicians set about investigating them? Subscribe for regular science videos: http://b
09:53
The Curse Of Lane 8 - Numberphile

555 views / 0 likes - added 8 years ago

Professor Richard Tapia (Rice University) on how his son's BMX adventures led to some interesting mathematics. Also thanks to Bristol BMX Club. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile N
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Prime Knots - Numberphile

1,095 views / 0 likes - added 8 years ago

They are knot what you think! Primes, Composites and the usefulness of knots.... Second in a series of videos about knots. Here we again speak with Carlo H. Séquin from UC Berkeley. More videos to come at: http://bit.ly/Knot-a-Phile Edit and animation by
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What Is A Knot? - Numberphile

497 views / 0 likes - added 8 years ago

First in a series of videos about knots. Here we have Carlo H. Séquin from UC Berkeley. More videos to come at: http://bit.ly/Knot-a-Phile Edit and animation by Pete McPartlan. Film and interview by Brady Haran With thanks to Rob Scharein for the use of h
12:11
How Many Chess Games Are Possible?

568 views / 0 likes - added 8 years ago

Squarespace (10% off): http://squarespace.com/numberphile Dr James Grime talking about the Shannon Number and other chess stuff. More soon on chess positions and numbers. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www
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Orbits Are Odd: Crash Course Kids #22.2

761 views / 0 likes - added 8 years ago

Last week we talked about the orbits of the Earth and our Moon. But today we're going to go a little bigger... well, a lot better. Did you know that there is a massive Black Hole at the center of our Galaxy? Or that Pluto's orbit is really... weird? Today
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Everything Revolves Around You: Crash Course Kids #22.1

937 views / 1 likes - added 8 years ago

So, why doesn't the moon just crash into the Earth? And why doesn't the Earth crash into the Sun? What are orbits exactly and why do they happen? Well, it has to do with gravity and velocity. In this episode of Crash Course Kids, Sabrina talks to us about
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15:13
Numbers And Free Will - Numberphile

631 views / 0 likes - added 8 years ago

Artificial Intelligence gets Edward Frenkel thinking about vectors and numbers --- and the nature of human existence!? Extra interview footage: http://youtu.be/HctVeOR1tmU More Numberphile videos with Prof Frenkel: http://bit.ly/Frenkel_Playlist Prof Fren
07:38
What's Special About 196?

439 views / 0 likes - added 8 years ago

Free audio book offer: http://www.audible.com/numberphile Dr James Grime delves into the largely unresolved world of Lychrel Numbers? James Grime: https://twitter.com/jamesgrime For audio books by Numberphile stars, go to Audible and search these names; H
05:43
Möbius Knots And Roller Coasters - Numberphile

575 views / 0 likes - added 8 years ago

Carlo H. Séquin (from UC Berkeley) discusses more knots - this time venturing into the worlds of snow sculptures, Möbius Bands and Roller Coasters! More videos to come at: http://bit.ly/Knot-a-Phile Edit and animation by Pete McPartlan. Film and interview
07:11
The Infinitesimal Monad - Numberphile

637 views / 0 likes - added 8 years ago

More mind-bending math from the world of the infinitely big - and infinitesimally small. Featuring Professor Carol Wood from Wesleyan University. More from this interview: http://youtu.be/FVZqPaH94qU Infinity is bigger than you think: https://youtu.be/elv
07:04
The 8 Queen Problem - Numberphile

555 views / 0 likes - added 8 years ago

Our thanks to lynda.com - use our link: http://www.lynda.com/numberphile Dr James Grime discusses a famous chess problem - placing eight queens "safely" on a chess board. Some extra footage from this video will appear on Numberphile2 next Monday... https:
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The Opposite Of Infinity - Numberphile

629 views / 0 likes - added 8 years ago

Continuing to talk Infinitesimals, this time with Dr James Grime. See last week's video: https://youtu.be/BBp0bEczCNg Dividing by Zero: https://youtu.be/BRRolKTlF6Q James Grime: http://singingbanana.com NUMBERPHILE Website: http://www.numberphile.com/ Num
04:29
Langton's Ant - Numberphile

552 views / 0 likes - added 8 years ago

Langton's Ant - starring Katie Steckles (and Audrey). Extra footage: https://youtu.be/oTssNuDEkSc The 104-steps: https://youtu.be/xU072T4V12A John Conway videos: http://bit.ly/ConwayNumberphile Support us on Patreon: http://www.patreon.com/numberphile Kat
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Mathematical Closure

511 views / 0 likes - added 8 years ago

Understanding what it means for a set to be closed under an operation.
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The Mathematical Secrets Of Pascal’s Triangle - Wajdi Mohamed Ratemi

1,681 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-mathematical-secrets-of-pascal-s-triangle-wajdi-mohamed-ratemi Pascal’s triangle, which at first may just look like a neatly arranged stack of numbers, is actually a mathematical treasure trove. But what abo
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The Infinite Hotel Paradox - Jeff Dekofsky

714 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-infinite-hotel-paradox-jeff-dekofsky The Infinite Hotel, a thought experiment created by German mathematician David Hilbert, is a hotel with an infinite number of rooms. Easy to comprehend, right? Wrong. Wha
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Why It's Impossible To Tune A Piano

528 views / 0 likes - added 8 years ago

Pianos can't be perfectly tuned - it's a mathematical fact! Thanks to http://www.audible.com/minutephysics for supporting MinutePhysics. Equal tempered tuning: https://en.wikipedia.org/wiki/Equal_temperament Just Tuning: https://en.wikipedia.org/wiki/Just
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01:52
Mysteries Of Vernacular: Odd - Jessica Oreck And Rachael Teel

600 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/mysteries-of-vernacular-odd-jessica-oreck-and-rachael-teel Whether we're talking all things unusual or mathematical, the origins of the word odd point to the Indo-European root uzdho, which means pointing upward
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Kakeya's Needle Problem - Numberphile

920 views / 0 likes - added 8 years ago

The famed Kakeya Needle Problem, discussed by Charles Fefferman from Princeton University. Edit and animation by Pete McPartlan Film and interview by Brady Haran 17-gon: https://youtu.be/87uo2TPrsl8 NUMBERPHILE Website: http://www.numberphile.com/ Numberp
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Powers Of 2 - Numberphile

553 views / 0 likes - added 8 years ago

Powers of 2 and leading digits. Featuring Dmitry Kleinbock from Brandeis University. Filmed at MSRI in Berkeley. More footage: https://youtu.be/vetsor9NTF8 Benford's Law: https://youtu.be/XXjlR2OK1kM NUMBERPHILE Website: http://www.numberphile.com/ Number
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Pi And The Mandelbrot Set - Numberphile

603 views / 0 likes - added 8 years ago

Thanks to Audible --- http://www.audible.com/numberphile This video features Dr Holly Krieger. Extra footage from this interview: https://youtu.be/r8Ksuc7T-VQ More videos with Holly Krieger: http://bit.ly/HollyKrieger Numberphile is supported by the Mathe
09:41 Popular
Philosophy Of Numbers - Numberphile

736 views / 0 likes - added 8 years ago

We revisit the philosophy department and the question of whether numbers really exist? Featuring Mark Jago from the University of Nottingham. Earlier video on numbers' existence: https://youtu.be/1EGDCh75SpQ Infinity paradoxes: https://youtu.be/dDl7g_2x74
02:54 Popular
How To Describe Real-world Situations With Inequalities | 6th Grade | Khan Academy

1,147 views / 0 likes - added 8 years ago

Learn how to write inequalities to model real-world situation. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-inequalities/e/inequalities-in-one-var
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How To Solve One-step Multiplication And Division Equations With Fractions And Decimals

939 views / 0 likes - added 8 years ago

"Learn how to solve equations in one step by multiplying or dividing a number from both sides. These problems involve decimals and fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/
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How To Solve One-step Equations With Fractions And Decimals | 6th Grade | Khan Academy

1,789 views / 0 likes - added 8 years ago

Learn how to solve one-step addition and subtraction equations that have fractions and decimals in them. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-
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How To Find Mistakes In One Step Equations | 6th Grade | Khan Academy

745 views / 0 likes - added 8 years ago

Learn how to spot mistakes in someone else's work as they attempt to solve one-step equations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-st
04:21 Popular
How To Write One-step Equations For Word Problems | 6th Grade | Khan Academy

1,445 views / 0 likes - added 8 years ago

Learn how to write basic equations to model real-world situations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-super-yoga/e/equations-in-one-vari
01:58 Popular
How To Find Equivalent Expressions By Combining Like Terms And Using The Distributive Property

1,231 views / 0 likes - added 8 years ago

"Equivalent algebraic expressions exercise Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-equivalent-expressions/e/equivalent-forms-of-expressions-1?
06:29 Popular
How To Use The Distributive Property With Variables | 6th Grade | Khan Academy

1,280 views / 0 likes - added 8 years ago

Learn how to apply the distributive property to algebraic expressions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-distributive-property/e/distrib
03:27 Popular
How To Use The Distributive Property To Factor Out The Greatest Common Factor | Khan Academy

1,151 views / 0 likes - added 8 years ago

Learn how to apply the distributive property to factor numerical expressions (no variables). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-distribut
04:42 Popular
How To Write Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

1,262 views / 0 likes - added 8 years ago

Learn how to write expressions with variables to describe situations described in word problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-alg-e
03:09 Popular
How To Write Basic Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

935 views / 0 likes - added 8 years ago

Learn how to write basic expressions with variables to describe situations described in word problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th
02:37 Popular
How To Write Basic Expressions With Variables | 6th Grade | Khan Academy

840 views / 0 likes - added 8 years ago

Learn how to write basic algebraic expressions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-writing-expressions/e/writing-expressions-with-variabl
05:15 Popular
Thinking About The Changing Values Of Variables And Expressions | 6th Grade | Khan Academy

830 views / 0 likes - added 8 years ago

Explore how the value of an algebraic expression changes as the value of its variable changes. The algebraic expressions used in this video are 100-x, 5/x + 5, and (3y)/(2y). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacad
03:27 Popular
How To Evaluate Expressions In Two Variables With Decimals And Fractions | 6th Grade | Khan Academy

999 views / 0 likes - added 8 years ago

Learn how to evaluate expressions that have two different variables in them by using a technique called substitution (or "plugging in"). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6t
04:32
The Zeroth Power | Arithmetic Operations | 6th Grade | Khan Academy

600 views / 0 likes - added 8 years ago

Learn why a number raised to the zero power equals 1. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-arithmetic-operations/cc-6th-exponents/e/positive_and_zero_exponents?utm_source=Y
12:15
The Greatest Machine That Never Was - John Graham-Cumming

625 views / 0 likes - added 8 years ago

Computer science began in the '30s ... the 1830s. John Graham-Cumming tells the story of Charles Babbage's mechanical, steam-powered "analytical engine" and how Ada Lovelace, mathematician and daughter of Lord Byron, saw beyond its simple computational ab
04:58 Popular
Your Brain Can Solve Algorithms - David J. Malan

993 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/your-brain-can-solve-algorithms-david-j-malan An algorithm is a mathematical method of solving problems both big and small. Though computers run algorithms constantly, humans can also solve problems with algorit
09:31
Fold And Cut Theorem - Numberphile

691 views / 0 likes - added 8 years ago

Lynda free trial (try the typography stuff!!): http://www.lynda.com/numberphile Katie Steckles discusses the Fold and Cut Theorem - from A to Z. Katie: http://www.katiesteckles.co.uk More on the topic: http://erikdemaine.org/foldcut/ NUMBERPHILE Website:
03:33 Popular
Danger! Falling Objects: Crash Course Kids #32.1

1,310 views / 1 likes - added 8 years ago

So, what would happen if you dropped a hammer and a feather at the same time, from the same height? Well, the hammer would hit the ground first, right? But why? You might think it's because the hammer is heavier, or has more mass than the feather. But it'
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23:08 Popular
A Rare Interview With The Mathematician Who Cracked Wall Street | Jim Simons | TED Talks

856 views / 0 likes - added 8 years ago

Jim Simons was a mathematician and cryptographer who realized: the complex math he used to break codes could help explain patterns in the world of finance. Billions later, he’s working to support the next generation of math teachers and scholars. TED’s Ch
04:01 Popular
Astronaut Experiment: Crash Course Kids #32.2

708 views / 2 likes - added 8 years ago

Air resistance! It's a thing! In this episode of Crash Course Kids, Sabrina does her own Astronaut Experiment to show us how we can prove it! Watch More Crash Course Kids: https://www.youtube.com/user/crashcoursekids ///Standards Used in This Video/// 5-P
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10:26
Skewes' Massive Number - Numberphile

554 views / 0 likes - added 8 years ago

Dr James Grime on the epic Skewes' Number. Lynda free trial (worth a look): http://www.lynda.com/numberphile Prime numbers: http://bit.ly/primevids Graham's Number: http://bit.ly/GrahamsNumber A small bit we chopped from this video: https://youtu.be/qgN6D
09:11 Popular
The Shape Of DNA - Numberphile

1,004 views / 0 likes - added 8 years ago

The amazing knots, twists and turns inside our cells. This is Part One of DNA Topology featuring Professor Mariel Vazquez from UC Davis. Part Two: Coming Soon Videos by Brady Haran Editing and animation in this video by Pete McPartlan NUMBERPHILE Website:
04:37 Popular
Group Theory 101: How To Play A Rubik’s Cube Like A Piano - Michael Staff

1,164 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/group-theory-101-how-to-play-a-rubik-s-cube-like-a-piano-michael-staff Mathematics explains the workings of the universe, from particle physics to engineering and economics. Math is even closely related to music
08:29 Popular
The Uncracked Problem With 33 - Numberphile

702 views / 0 likes - added 8 years ago

33 is the lowest unsolved problem in the world of "summing three cubes". But 30 was also a tough nut to crack! Featuring Tim Browning from the University of Bristol. Taxi Cab Numbers: https://youtu.be/LzjaDKVC4iY Fermat's Last Theorem: https://youtu.be/qi
06:10
How DNA Unties Its Own Knots - Numberphile

538 views / 0 likes - added 8 years ago

How "Pac-Man" unties knots in our DNA... This is Part Two of DNA Topology featuring Professor Mariel Vazquez from UC Davis. Part One: https://youtu.be/AxxnziuL408 NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.faceboo
07:31
Cutting A Klein Bottle In Half - Numberphile

661 views / 0 likes - added 8 years ago

Klein Bottle enthusiast Cliff Stoll uses a diamond saw on a glass Klein Bottle. More videos about his bottles: http://bit.ly/KleinBottles Cliff's site (selling bottles): http://bit.ly/ACME_Klein NUMBERPHILE Website: http://www.numberphile.com/ Numberphile
04:10 Popular
Approximating With Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

1,164 views / 0 likes - added 8 years ago

Learn how to approximate how much larger the world population was than the US population in 2014. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-orders-of-
02:41 Popular
Multiplying Multiples Of Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

1,123 views / 0 likes - added 8 years ago

Learn how to multiply (9 * 10^9) (-2 * 10^-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-orders-of-magnitude/e/orders-of-magnitude?utm_source=YT&utm_m
04:01 Popular
Comparing Values With Calculator | Numbers And Operations | 8th Grade | Khan Academy

1,149 views / 0 likes - added 8 years ago

Learn how to compare 22.9% to √0.45 using a calculator. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/e/approximating-irr
02:11 Popular
Ratios, Rates, And Proportions — Basic Example | Math | New SAT | Khan Academy

1,018 views / 0 likes - added 8 years ago

Watch Sal work through a basic Ratios, rates, and proportions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-problem-solving-data-analysis/v/sat-math-q1-harder?utm_source=YT&utm_medium=Desc&utm_campaign=
02:23
Isolating Quantities — Harder Example | Math | New SAT | Khan Academy

648 views / 0 likes - added 8 years ago

Watch Sal work through a harder Isolating quantities problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p13-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT M
02:01 Popular
Isolating Quantities — Basic Example | Math | New SAT | Khan Academy

1,089 views / 0 likes - added 8 years ago

Watch Sal work through a basic Isolating quantities problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p14-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Mi
02:38 Popular
Function Notation — Harder Example | Math | New SAT | Khan Academy

1,195 views / 0 likes - added 8 years ago

Watch Sal work through a harder Function notation problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-problem-solving-data-analysis/v/sat-math-q1-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Misse
02:26 Popular
Function Notation — Basic Example | Math | New SAT | Khan Academy

1,117 views / 0 likes - added 8 years ago

Watch Sal work through a basic Function notation problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p13-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Misse
02:22 Popular
Nonlinear Equation Graphs — Basic Example | Math | New SAT | Khan Academy

745 views / 0 likes - added 8 years ago

Watch Sal work through a basic Nonlinear equation graphs problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p12-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewS
01:15 Popular
Polynomial Factors And Graphs — Harder Example | Math | New SAT | Khan Academy

1,295 views / 0 likes - added 8 years ago

Watch Sal work through a harder Polynomial factors and graphs problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p12-easier?utm_source=YT&utm_medium=Desc&utm_campaign
01:36 Popular
Polynomial Factors And Graphs — Basic Example | Math | New SAT | Khan Academy

1,058 views / 0 likes - added 8 years ago

Watch Sal work through a basic Polynomial factors and graphs problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p11-harder?utm_source=YT&utm_medium=Desc&utm_campaign=
03:13 Popular
Interpreting Nonlinear Expressions — Harder Example | Math | New SAT | Khan Academy

813 views / 0 likes - added 8 years ago

Watch Sal work through a harder Interpreting nonlinear expressions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p1-easier?utm_source=YT&utm_medium=Desc&utm_camp
05:55 Popular
Interpreting Nonlinear Expressions — Basic Example | Math | New SAT | Khan Academy

1,841 views / 1 likes - added 8 years ago

Watch Sal work through a basic Interpreting nonlinear expressions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p10-harder?utm_source=YT&utm_medium=Desc&utm_camp
03:06 Popular
Operations With Rational Expressions — Harder Example | Math | New SAT | Khan Academy

1,293 views / 0 likes - added 8 years ago

Watch Sal work through a harder Operations with rational expressions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p6-easier?utm_source=YT&utm_medium=Desc&utm_ca
03:22
Linear And Quadratic Systems — Harder Example | Math | New SAT | Khan Academy

645 views / 0 likes - added 8 years ago

Watch Sal work through a harder Linear and quadratic systems problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p4-easier?utm_source=YT&utm_medium=Desc&utm_campaign=N
04:50 Popular
Linear And Quadratic Systems — Basic Example | Math | New SAT | Khan Academy

795 views / 0 likes - added 8 years ago

Watch Sal work through a basic Linear and quadratic systems problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p8-harder?utm_source=YT&utm_medium=Desc&utm_campaign=Ne
04:34 Popular
Radical And Rational Equations — Harder Example | Math | New SAT | Khan Academy

1,068 views / 0 likes - added 8 years ago

Watch Sal work through a harder Radical and rational equations problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p9-easier?utm_source=YT&utm_medium=Desc&utm_campaign
01:22 Popular
Radical And Rational Equations — Basic Example | Math | New SAT | Khan Academy

853 views / 0 likes - added 8 years ago

Watch Sal work through a basic Radical and rational equations problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p7-harder?utm_source=YT&utm_medium=Desc&utm_campaign=
02:39 Popular
Operations With Polynomials — Harder Example | Math | New SAT | Khan Academy

1,431 views / 0 likes - added 8 years ago

Watch Sal work through a harder Operations with polynomials problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p11-easier?utm_source=YT&utm_medium=Desc&utm_campaign=N
03:13
How Do Pneumatic Tubes Work?

644 views / 0 likes - added 8 years ago

The Internet has been called a series of tubes. But long before email, people sent messages across cities through networks of pneumatic tubes. Learn how they work! Learn more at HowStuffWorks.com: http://electronics.howstuffworks.com/everyday-tech/pneumat
02:57 Popular
Operations With Polynomials — Basic Example | Math | New SAT | Khan Academy

1,493 views / 0 likes - added 8 years ago

Watch Sal work through a basic Operations with polynomials problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p6-harder?utm_source=YT&utm_medium=Desc&utm_campaign=New
05:39 Popular
Solving Quadratic Equations — Harder Example | Math | New SAT | Khan Academy

823 views / 0 likes - added 8 years ago

Watch Sal work through a harder Solving quadratic equations problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p10-easier?utm_source=YT&utm_medium=Desc&utm_campaign=N
01:16 Popular
Solving Quadratic Equations — Basic Example | Math | New SAT | Khan Academy

932 views / 0 likes - added 8 years ago

Watch Sal work through a basic Solving quadratic equations problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p5-harder?utm_source=YT&utm_medium=Desc&utm_campaign=New
02:33 Popular
Radicals And Rational Exponents — Harder Example | Math | New SAT | Khan Academy

1,544 views / 0 likes - added 8 years ago

Watch Sal work through a harder Radicals and rational exponents problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p7-easier?utm_source=YT&utm_medium=Desc&utm_campaig
07:02 Popular
Manipulating Quadratic And Exponential Expressions — Harder Example | Math | New SAT | Khan Academy

2,331 views / 0 likes - added 8 years ago

Watch Sal work through a harder Manipulating quadratic and exponential expressions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p3-easier?utm_source=YT&utm_medi
03:42 Popular
Manipulating Quadratic And Exponential Expressions — Basic Example | Math | New SAT | Khan Academy

1,043 views / 0 likes - added 8 years ago

Watch Sal work through a basic Manipulating quadratic and exponential expressions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p2-harder?utm_source=YT&utm_mediu
09:40 Popular
Quadratic And Exponential Word Problems — Harder Example | Math | New SAT | Khan Academy

990 views / 0 likes - added 8 years ago

Watch Sal work through a harder Quadratic and exponential word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p2-easier?utm_source=YT&utm_medium=Desc&utm_campaign
03:30 Popular
Quadratic And Exponential Word Problems — Basic Example | Math | New SAT | Khan Academy

2,544 views / 0 likes - added 8 years ago

Watch Sal work through a basic Quadratic and exponential word problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p1-harder?utm_source=YT&utm_medium=Desc&utm_campaign=
02:09
Cute Paper Trick - Numberphile

664 views / 0 likes - added 8 years ago

A little extra trick based on some of the Mobius cutting videos we recently published. Featuring Tadashi Tokieda. MORE: http://bit.ly/tadashi_vids NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphil
06:39
Unexpected Shapes (Part 2) - Numberphile

522 views / 0 likes - added 8 years ago

See part one at: https://youtu.be/wKV0GYvR2X8 Tadashi Tokieda continues to cut loops and Mobius strips... And more: http://bit.ly/tadashi_vids NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Nu
07:36
Unexpected Shapes (Part 1) - Numberphile

652 views / 0 likes - added 8 years ago

Tadashi Tokieda cuts various combinations of loops and Mobius loops - with surprising results. Part 2: https://youtu.be/mh3eMt09EAs And more: http://bit.ly/tadashi_vids NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.f
07:20
Tic-Tac-Toe (with Xs Only) - Numberphile

530 views / 0 likes - added 8 years ago

Changing the rules of Tic-Tac-Toe to create interesting scenarios. Featuring Thane Plambeck. And even more soon. Dots and Boxes: https://youtu.be/KboGyIilP6k Connect Four: https://youtu.be/yDWPi1pZ0Po NUMBERPHILE Website: http://www.numberphile.com/ Numbe
05:35 Popular
Could Planet Minecraft Actually Exist?

1,207 views / 3 likes - added 8 years ago

This episode is brought to you by Dropbox https://www.dropbox.com/ Tweet ⇒ http://bit.ly/OKTBSmcraft Share on FB ⇒ http://bit.ly/OKTBSmcraftFB ↓ More info and sources below ↓ Gravitational field of a cubic planet: Chappell, James Michael, et al. "The grav
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10:54
Secrets Of 3-Board Tic-Tac-Toe - Numberphile

579 views / 0 likes - added 8 years ago

X-Only Misere Version! Previous video: https://youtu.be/ktPvjr1tiKk Extra discussion: https://youtu.be/v494yltz_7I Featuring Thane Plambeck. More at: http://www.notakto.com (app based on this) and paper on the game and its mathematics: http://arxiv.org/pd
04:46
Six Dice One-Roll Yahtzee (in Super Slow Motion) - Numberphile

478 views / 0 likes - added 8 years ago

It's the video you never knew you were waiting for... With pink dice! More Yahtzee videos from Numberphile: http://bit.ly/yahtzeerolls Patreon: https://www.patreon.com/numberphile With thanks to these supporters: Peter Michael Osudar (Mr. O) Herschal Sand
03:40
Elliptical Pool Table - Numberphile

544 views / 1 likes - added 8 years ago

A game to play on the elliptical table: http://youtu.be/3WHBlPvK3Ek And more extra footage: http://youtu.be/pulp55gTKGE Alex Bellos' Loop Table website: http://www.loop-the-game.com Alex discusses the topic in his book Alex Through the Looking-Glass (UK)
05:53
A Game For The Elliptical Pool Table - Numberphile

566 views / 0 likes - added 8 years ago

Video explaining the elliptical pool table: http://youtu.be/4KHCuXN2F3I And some extra footage: http://youtu.be/pulp55gTKGE Alex Bellos' Loop Table website: http://www.loop-the-game.com Alex discusses the topic in his book Alex Through the Looking-Glass (
02:39 Popular
The Mind-Blowing Mathematics Of Sunflowers - Instant Egghead #59

724 views / 0 likes - added 8 years ago

Why do the number of spirals in a sunflower match up with the integers 34, 55, 89 and 144 -- numbers found in the famous Fibonacci Sequence? Scientific American editor John Matson explains. -- WATCH more Instant Egghead: http://goo.gl/CkXwKj SUBSCRIBE to
13:32
Glitch Primes And Cyclops Numbers - Numberphile

646 views / 0 likes - added 8 years ago

Audible: http://www.audible.com/numberphile Simon Pampena on Glitch Primes and Binary Cyclops Numbers. Simon on Twitter: https://twitter.com/mathemaniac Some book recommendations... Love & Math by Edward Frenkel, The Simpsons and their Mathematical Secret
04:26 Popular
Can Quantum Entanglement Explain Gravity?

716 views / 0 likes - added 8 years ago

Until now theories about quantum physics were negated by gravity, but can entanglement actually help explain gravity? Are We Living In A Holographic Universe ►►►►http://dne.ws/1tUskC5 Sign Up For The TestTube Newsletter Here ►►►►http://dne.ws/1McUJdm Read
07:22 Popular
Freaky Dot Patterns - Numberphile

1,263 views / 0 likes - added 8 years ago

Tadashi Tokieda is back, this time with Moiré Patterns. More with Tadashi: http://bit.ly/tadashi_vids Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Out thanks also to our Patreon supporters,
03:38 Popular
SCIENCE WARS - Acapella Parody

709 views / 2 likes - added 8 years ago

iTunes: http://apple.co/1IBrCVG Bandcamp: http://bit.ly/1XO9Ik0 SUBSCRIBE: http://bit.ly/asapsci Follow us: @WhaleWatchMePlz and @MitchellMoffit Inspired by the amazing Jon Cozart and his fantastic Disney parodies: https://youtu.be/diU70KshcjA Lyrics by M
04:29
Mathematical Present Wrapping

597 views / 0 likes - added 8 years ago

Mathematician Katie Steckles takes you through some mathematically satisfying ways to wrap presents using paper.
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04:46
The Lollipop Hypothesis

469 views / 0 likes - added 8 years ago

http://www.sciencefriday.com t's not just generations of children who have pondered how many licks it takes to reach the center of a lollipop. Mathematicians studying fluid dynamics at NYU's Applied Mathematics Lab designed experiments to watch how lollip
09:14
The surprising beauty of mathematics | Jonathan Matte | TEDxGreensFarmsAcademy

652 views / 0 likes - added 8 years ago

Never miss a talk! SUBSCRIBE to the TEDx channel: http://bit.ly/1FAg8hB Jonathan Matte has been teaching Mathematics for 20 years, the last 13 at Greens Farms Academy. Formerly the Mathematics Department Chair, he is currently the 12th Grade Dean and Coac
09:04 Popular
Shapes And Hook Numbers - Numberphile

761 views / 0 likes - added 8 years ago

Shapes, Tableaux and Hook Numbers. Featuring Professor Curtis Greene from Haverford College. Extra footage: https://youtu.be/JiwM5g_RC3c Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos
08:39
The IPhone Of Slide Rules - Numberphile

663 views / 0 likes - added 8 years ago

Thanks Audible: http://www.audible.com/numberphile Alex Bellos discusses slide rules and then the Halden Calculex, which he describes as the "iPhone of Slide Rules" Alex Bellos: http://www.alexbellos.com Slide Rule Museum: http://sliderulemuseum.com Purdu
03:15
Super-fast Way To Tie Shoelaces - Numberphile

577 views / 0 likes - added 8 years ago

Just for fun... Featuring Matt Parker. Some REAL knot action at: http://bit.ly/Knot-a-Phile More videos with Matt: http://bit.ly/standupmaths --- And Matt's book: http://bit.ly/Make_Do_Numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphi
04:12 Popular
Was Our Asteroid Belt Once A Planet? #AskDNews

785 views / 0 likes - added 8 years ago

The Main Asteroid Belt sits between Mars and Jupiter. How did it form? Did there used to be a planet there? Get a month’s worth of shaving supplies from Harry’s for just $10 by entering DNEWS at checkout! ►►►► http://hrys.co/dnews Why Are The Planets In T
12:25
Fantastic Quaternions - Numberphile

494 views / 0 likes - added 8 years ago

Dr James Grime discusses a type of number beyond the complex numbers, and why they are useful. Extra footage: https://youtu.be/ISbJ9S0fzwY NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Number
05:37 Popular
Who Shares Your Birthday?

840 views / 2 likes - added 8 years ago

Tweet this ⇒ http://bit.ly/OKTBSbday Share on FB ⇒ http://bit.ly/OKTBSbdayFB Click here if you’d like to subscribe: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ In case you have a strange new desire to get an IOTBS shirt: http://store.dftba.com
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12:32
How They Found The World's Biggest Prime Number - Numberphile

593 views / 0 likes - added 8 years ago

Featuring Matt Parker... See part one at: https://youtu.be/tlpYjrbujG0 Part three on Numberphile2: https://youtu.be/jNXAMBvYe-Y Matt's interview with Curtis Cooper: https://youtu.be/q5ozBnrd5Zc The previous record: https://youtu.be/QSEKzFGpCQs Mersenne Nu
06:39
New World's Biggest Prime Number (PRINTED FULLY ON PAPER) - Numberphile

586 views / 0 likes - added 8 years ago

Matt Parker on the latest Mersenne Prime to take the title of "world's biggest prime". He had it printed! More from this interview very soon, including details of how the prime was found. PART TWO: https://youtu.be/lEvXcTYqtKU PART THREE on Numberphile2:
23:22
Hunt For The Elusive 4th Klein Bottle - Numberphile

525 views / 0 likes - added 8 years ago

Carlo Séquin on his search for the elusive "fourth type of Klein bottle". More videos on Klein Bottles: http://bit.ly/KleinBottles Carlo's paper: http://bit.ly/Carlo_Klein Also featuring Carlo: Mobius House https://youtu.be/iwo7JReFTeg Torus Donut https:/
06:49
The Man With 1,000 Klein Bottles UNDER His House - Numberphile

620 views / 0 likes - added 8 years ago

Thanks Squarespace: http://squarespace.com/numberphile More Numberphile on Klein Bottles: http://bit.ly/KleinBottles This video features Cliff Stoll, the man behind ACME Klein Bottles: http://bit.ly/ACME_Klein NUMBERPHILE Website: http://www.numberphile.c
02:22
How To Make A Klein Bottle (in Three Dimensions) - Numberphile

519 views / 0 likes - added 8 years ago

Cliff Stoll on how he makes Klein Bottles from glass. More videos on Klein Bottles: http://bit.ly/KleinBottles ACME Klein Bottles: http://bit.ly/ACME_Klein NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/n
07:45
Why 82,000 Is An Extraordinary Number - Numberphile

506 views / 0 likes - added 8 years ago

Check out How Not To Be Wrong by Jordan Ellenberg: http://bit.ly/HowNotToBeWrong And special Kindle offer: http://bit.ly/Wrong_Special This video features Dr James Grime - http://singingbanana.com Cheers to Thomas Oléron Evans for inspiring James: http://
14:22 Popular
Funny Fractions And Ford Circles - Numberphile

709 views / 2 likes - added 8 years ago

Farey Sequences, Ford Circles and a strange addition sign... Featuring Francis Bonahon from the University of Southern California. Watch EPIC CIRCLES: https://www.youtube.com/watch?v=sG_6nlMZ8f4 Periodic Videos chemistry: https://www.youtube.com/periodicv
12:58
Embedding A Torus (John Nash) - Numberphile

564 views / 0 likes - added 8 years ago

This videos features James Grime with a little bit of Edward Crane. Ed's full discussion of Nash and embedding: https://youtu.be/5xQ4ePN79-M Nash shared both the Nobel and Abel Prizes. Full details. Nobel: http://www.nobelprize.org/nobel_prizes/economic-s
05:22
More Hyperbolic Sports - Numberphile

537 views / 0 likes - added 8 years ago

Follows on from the previous video (last week) about hyperbolic sports: https://youtu.be/u6Got0X41pY Featuring Dick Canary from the University of Michigan. Extra footage on Numberphile2: https://youtu.be/dpMMtm437MU Exactly a yard: https://youtu.be/T26Cw7
19:31 Popular
Math Magic

711 views / 0 likes - added 8 years ago

Links to sources, more math magic, and other cool things below! My Twitter: http://www.twitter.com/tweetsauce My Instagram: http://www.instagram.com/electricpants Thanks to Vanessa from BrainCraft! Check out her channel: https://www.youtube.com/user/brain
10:00 Popular
Triangles Have A Magic Highway - Numberphile

754 views / 0 likes - added 8 years ago

Triangles have multiple centres, and many of them lie on the so-called Euler Line. Extra footage: https://youtu.be/p7oGGSwUFwM Featuring Zvezdelina Stankova. Editing and animation by Pete McPartlan. Thanks also to Tom Davis of http://geometer.org More vid
06:27 Popular
100,000,000 Years From Now

936 views / 0 likes - added 8 years ago

Try Squarespace: http;//squarespace.com/itsokaytobesmart Tweet this ⇒ http://bit.ly/OKTBS100MY Share on FB ⇒ http://bit.ly/OKTBS100MYfb ↓ More info and sources below ↓ For more science and stories of the Anthropocene, subscribe to the Generation Anthropoc
10:38
The Mathematics Of Crime And Terrorism - Numberphile

629 views / 0 likes - added 8 years ago

Thanks Audible: http://www.audible.com/numberphile Hannah Fry on the mathematics of crime and terrorism, on which she has co-authored a new paper. The paper: http://bit.ly/1nKR7Lk (open access version) NUMBERPHILE Website: http://www.numberphile.com/ Numb
12:53
Strange Spinning Tubes - Numberphile

640 views / 0 likes - added 8 years ago

Tadashi is back with more mathematical toys - this time small tubes which do intriguing things when they spin. Extra footage from this interview: https://youtu.be/5dJsOF7_GfY More Tadashi Tokieda videos: http://bit.ly/tadashi_vids Film by Pete McPartlan (
01:44 Popular
Interpreting Two-way Tables | Data And Modeling | 8th Grade | Khan Academy

1,711 views / 0 likes - added 8 years ago

Learn how to read two-way tables. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-counting/v/counting-with-small-numbers?utm_source=YT&utm_medium=Desc&utm_c
04:07 Popular
Adding And Subtracting Negative Numbers | Pre-Algebra | Khan Academy

1,323 views / 0 likes - added 8 years ago

Learn how to add and subtract negative numbers. The problems solved in this video are 2 - 3 = -1 and -2 - 3 = -5 and -2 + 3 = 1 and 2 - (-3) = 5 and -2 - (-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pr
03:33 Popular
Finding A Percentage | Decimals | Pre-Algebra | Khan Academy

1,242 views / 0 likes - added 8 years ago

Once again, fractions are our friends as we use them to find a percentage. You'll also see a couple of different ways to arrive at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimal
05:42 Popular
Understanding Division Of Fractions | Fractions | Pre-Algebra | Khan Academy

1,203 views / 0 likes - added 8 years ago

Using a number line, we'll explain the rule of "invert and multiply" when dividing two fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/div-fractions-fractions-pre-alg/e/
04:24 Popular
Example Of Subtracting Fractions With Unlike Denominators | Fractions | Pre-Algebra | Khan Academy

1,588 views / 0 likes - added 8 years ago

If you conquered adding fractions with different denominators, then subtracting fractions will be a snap. Don't worry...we'll take it slow and explain every step. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math
09:23 Popular
Converting Fractions To Decimals | Decimals | Pre-Algebra | Khan Academy

2,068 views / 2 likes - added 8 years ago

How to express a fraction as a decimal Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/decimal-to-fraction-pre-alg/e/converting_fractions_to_decimals?utm_source=YT&utm_medium=Desc&u
05:20 Popular
Order Of Operations: PEMDAS | Arithmetic Properties | Pre-Algebra | Khan Academy

1,838 views / 0 likes - added 8 years ago

Work through another challenging order of operations example with only positive numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/order_of_operations/e/order_of_operations
05:51 Popular
Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

2,063 views / 0 likes - added 8 years ago

Introduces the concept of equivalent fractions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/equivalent-fractions-pre-alg/e/equivalent_fractions?utm_source=YT&utm_medium=Desc&utm
20:48 Popular
Introduction To Scientific Notation | Pre-Algebra | Khan Academy

1,889 views / 0 likes - added 8 years ago

Introduction to scientific notation. An in-depth discussion about why and how scientific notation is used. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/sc
14:13 Popular
Introduction To Ratios | Ratios, Proportions, Units, And Rates | Pre-Algebra | Khan Academy

1,892 views / 0 likes - added 8 years ago

What a ratio is. Simple ratio problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/ratio_word_problems?utm_source=YT&utm_medium=Desc&utm_campaign=PreAl
04:20 Popular
Dividing A Whole Number By A Decimal | Decimals | Pre-Algebra | Khan Academy

1,694 views / 1 likes - added 8 years ago

When dividing a whole number by a decimal, you're going to need to change that decimal into a whole number. How? We'll show you. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/divi
07:14 Popular
Negative Exponents | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,561 views / 0 likes - added 8 years ago

How does a negative exponent affect our answer? Before you assume that the answer must be negative, think again! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/negative-exponents
05:41 Popular
Math Patterns Example 2 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

703 views / 0 likes - added 8 years ago

We continue to strengthen our skill in identifying patterns. This time we'll use a table to track the pattern. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_medium=Desc&utm
03:21 Popular
Introduction To Perimeter | Measurement | Pre-Algebra | Khan Academy

780 views / 0 likes - added 8 years ago

Find perimeter by adding side-lengths of various figures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/perimeter/e/perimeter_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Wa
08:13 Popular
Prime Numbers | Factors And Multiples | Pre-Algebra | Khan Academy

1,159 views / 0 likes - added 8 years ago

What does it mean to be a prime number? Let's progress though some whole numbers and ask ourselves if they meet the criteria. What is the criteria you ask? Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math
09:45 Popular
Simplifying Radicals | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,513 views / 1 likes - added 8 years ago

Using exponent rules to simplify radicals or square roots Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm
06:17 Popular
Solving Percent Problems | Decimals | Pre-Algebra | Khan Academy

875 views / 0 likes - added 8 years ago

We'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-word-probs-pre-alg/v/solving-percent-problems-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the
05:34 Popular
Multiplying Positive And Negative Numbers | Pre-Algebra | Khan Academy

1,371 views / 0 likes - added 8 years ago

Learn some rules of thumb for multiplying positive and negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/absolute-value/mult_div_negatives/e/multiplying_and_dividing_negative_numbers?
02:39 Popular
Comparing Decimals: Ordering From Least To Greatest | Decimals | Pre-Algebra | Khan Academy

1,880 views / 0 likes - added 8 years ago

This is a fun example where we reorder decimals from smallest to largest. You're looking for the place value that is the most significant, and then working backwards. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/
03:08 Popular
Multiplying Unit Fractions And Whole Numbers | Fractions | Pre-Algebra | Khan Academy

1,653 views / 1 likes - added 8 years ago

Don't let multiplying whole numbers and fractions get you down. We got this. This explanation will help you become a pro. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplyin
01:11 Popular
Subtracting Decimals: Example 1 | Decimals | Pre-Algebra | Khan Academy

1,079 views / 0 likes - added 8 years ago

Subtracting decimals...up to the hundredths placement. Line up those decimals before you start. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/adding-decimals-pre-alg/e/subtracting
06:14 Popular
How To Plot Inequalities On A Number Line | Pre-Algebra | Khan Academy

1,515 views / 0 likes - added 8 years ago

Learn how to graph an inequality on a number line to indicate which values make it true. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writin
03:09 Popular
Simplifying Square Roots | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,757 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.kh
06:20 Popular
Greatest Common Factor Explained | Factors And Multiples | Pre-Algebra | Khan Academy

1,163 views / 0 likes - added 8 years ago

Here's a nice explanation of least common factor (or least common divisor) along with a few practice example exercises. Let's roll. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/factors-multiples/
03:03 Popular
Introduction To Exponents | Pre-Algebra | Khan Academy

1,497 views / 0 likes - added 8 years ago

Taking an exponent is basically the act of repeated multiplication. You know how to multiply, right? If so, understanding exponents is completely within your grasp! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/ma
04:16 Popular
Least Common Multiple Exercise | Factors And Multiples | Pre-Algebra | Khan Academy

1,131 views / 0 likes - added 8 years ago

We're practicing finding the least common multiple in these example exercises. We'll teach you the prime factorization approach which is a pretty nifty way to find the lcm (least common multiple). Practice this lesson yourself on KhanAcademy.org right now
09:16 Popular
Adding/subtracting Negative Numbers | Pre-Algebra | Khan Academy

1,345 views / 0 likes - added 8 years ago

Adding and subtracting negative numbers Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/negatives-absolute-value-pre-alg/mult-div-negatives-pre-alg/v/multiplying-positive-and-negative-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=
09:17 Popular
Unit Conversion Within The Metric System | Pre-Algebra | Khan Academy

1,814 views / 0 likes - added 8 years ago

Metric unit conversion Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/metric-system-tutorial/v/converting-within-the-metric-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? http
03:38 Popular
Math Patterns Example 1 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

710 views / 0 likes - added 8 years ago

Part of our exploration of math is learning to identify patterns among numbers. Can you see the pattern in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_mediu
05:05 Popular
Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

871 views / 0 likes - added 8 years ago

We're displaying ratios in a table format here, and then asking: given a ratio, solve for equivalent ratios. Here are a few examples to practice on. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/r
08:34 Popular
LCM And GCF Word Problems | Factors And Multiples | Pre-Algebra | Khan Academy

1,783 views / 1 likes - added 8 years ago

Here we have a couple of word problems--one searching for the least common multiple and the other for the greatest common factor. Just read them with us slowly and follow along. You'll get it. Practice this lesson yourself on KhanAcademy.org right now: ht
02:49 Popular
Percent Word Problem Example 2 | Decimals | Pre-Algebra | Khan Academy

1,166 views / 0 likes - added 8 years ago

It's nice to practice conversion problems, but how about applying our new knowledge of percentages to a real life problem like recycling? Hint: don't forget your long division! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanac
10:00
Introduction To Number Systems And Binary | Pre-Algebra | Khan Academy

606 views / 0 likes - added 8 years ago

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/hexadecimal-number-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.
09:36 Popular
Negative Numbers Introduction | Negative Numbers And Absolute Value | Pre-Algebra | Khan Academy

2,148 views / 0 likes - added 8 years ago

Mysterious negative numbers! What ARE they? They are numbers less than zero. If you understand the nature of below zero temperatures, you can understand negative numbers. We'll help. Practice this lesson yourself on KhanAcademy.org right now: https://www.
09:43 Popular
Exponent Rules Part 1 | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,572 views / 0 likes - added 8 years ago

Introduction to exponent rules Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/exponent-properties/e/exponent_rules?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the
03:40 Popular
Multi-step Word Problem With Decimals And Subtraction | Pre-Algebra | Khan Academy

1,551 views / 0 likes - added 8 years ago

First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topi
03:28 Popular
Inequality Word Problems | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,589 views / 0 likes - added 8 years ago

We're writing inequalities by using information from the word problems. Woohoo! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writing-numeric
06:29 Popular
Multiplying Decimals: Place Value And Reordering | Decimals | Pre-Algebra | Khan Academy

1,375 views / 0 likes - added 8 years ago

We want you to develop an intuition about how to work with decimals. Understanding how you can rewrite decimals by considering the place value will help you multiply! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/
02:07 Popular
Percentage Of A Whole Number | Decimals | Pre-Algebra | Khan Academy

1,504 views / 0 likes - added 8 years ago

We hope you're beginning to see that there's more than one way to skin a cat. In other words, there are several different ways to solve problems involving percentages, decimals, and fractions. Watch as find the percentage of a whole number. Watch the next
08:30 Popular
Multiplying And Dividing Negative Numbers | Pre-Algebra | Khan Academy

1,773 views / 0 likes - added 8 years ago

Multiplying and dividing negative numbers Watch the next lesson: https://www.khanacademy.org/math/arithmetic/absolute-value/abs_value_tutorial/v/absolute-value-and-number-lines?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous less
09:50 Popular
Adding And Subtracting Fractions | Fractions | Pre-Algebra | Khan Academy

2,055 views / 1 likes - added 8 years ago

How to add and subtract fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/e/adding_fractions?utm_source=YT&utm_medium=Desc&utm_campaign=PreA
01:34 Popular
Solving Ratio Problems With Graph | Pre-Algebra | Khan Academy

1,869 views / 0 likes - added 8 years ago

In this example we'll plot points on the x and y axis to reflect the given ratios. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/solving-ratio-problems-wi
03:50 Popular
Introduction To Multiplying Decimals | Decimals | Pre-Algebra | Khan Academy

1,162 views / 0 likes - added 8 years ago

Multiplying decimals can be confusing because there's always the question as to where the decimals goes in the answer. We're about to show you so you'll never have to question it again! Practice this lesson yourself on KhanAcademy.org right now: https://w
04:17 Popular
Introduction To Area And Unit Squares | Measurement | Pre-Algebra | Khan Academy

1,533 views / 0 likes - added 8 years ago

Cover figures with square units to find their area. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/area-basics/e/measuring-area-with-unit-squares?utm_source=YT&utm_medium=Desc&utm_campa
04:33 Popular
Multiplying Negative And Positive Fractions | Fractions | Pre-Algebra | Khan Academy

866 views / 0 likes - added 8 years ago

See examples of multiplying and dividing fractions with negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/e/multiplying_fractions?utm_
02:32 Popular
Dividing Whole Numbers And Fractions: Potpourri | Fractions | Pre-Algebra | Khan Academy

1,713 views / 0 likes - added 8 years ago

Solve a word problem by dividing a whole number by a fraction. The example used in this video is 4 ÷ 1/5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/dividing-fractions-pre-alg
04:31 Popular
Number Patterns: Interpreting Relationships | Pre-Algebra | Khan Academy

1,525 views / 0 likes - added 8 years ago

Examining the points on a number line and interpreting the patterns to discover the relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/number-patterns/e/vis

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