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• 14:15

### 2003 AIME II Problem 4 (part 1)

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2003 AIME II Problem 4 (part 1) More free lessons at: http://www.khanacademy.org/video?v=gXnHodHNusg

• 06:08

### 2003 AIME II Problem 1

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2003 AIME II Problem 1 More free lessons at: http://www.khanacademy.org/video?v=JPQ8cfOsYxo

• 02:58

### 2003 AIME II Problem 3

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2003 AIME II Problem 3 More free lessons at: http://www.khanacademy.org/video?v=JU67TL2L1CA

• 02:27

### 2003 AIME II Problem 5 Minor Correction

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2003 AIME II Problem 5 Minor Correction More free lessons at: http://www.khanacademy.org/video?v=yXg5CYuCcU4

• 11:54

### 2003 AIME II Problem 15 (part 1)

288 views / 0 likes - added

Finding the sum of the absolute value of the imaginary parts of the square of the roots of a crazy polynomial More free lessons at: http://www.khanacademy.org/video?v=2eLAEMRrR7Q

• 11:33

### 2003 AIME II Problem 15 (part 2)

231 views / 0 likes - added

Finding the sum of the absolute value of the imaginary parts of the square of the roots of a crazy polynomial More free lessons at: http://www.khanacademy.org/video?v=TljVBB7gxbE

• 09:32

### 2003 AIME II Problem 15 (part 3)

334 views / 0 likes - added

Finding the sum of the absolute value of the imaginary parts of the square of the roots of a crazy polynomial More free lessons at: http://www.khanacademy.org/video?v=JTpXK2mENH4

• 08:14

### 2003 AIME II Problem 5

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Volume of a wedge cut from a cylindrical log More free lessons at: http://www.khanacademy.org/video?v=EzE53aPGbrQ

• 17:42

### 2003 AIME II Problem 6

333 views / 0 likes - added

Finding area of a skewed star More free lessons at: http://www.khanacademy.org/video?v=l9j26EOvTYc

• 12:08

### 2003 AIME II Problem 8

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Sequence from the product of 2 arithmetic sequences More free lessons at: http://www.khanacademy.org/video?v=ZFN63oTeYzc

• 09:56

### 2003 AIME II Problem 9

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Sum of polynomial evaluated at roots of another polynomial More free lessons at: http://www.khanacademy.org/video?v=ZSESJ8TeGSI

• 16:13

### 2003 AIME II Problem 13

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Probability of moving to a vertex More free lessons at: http://www.khanacademy.org/video?v=vKMNRcctwL4

• 13:25

### 2003 AIME II Problem 10

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perfect squares integers square root More free lessons at: http://www.khanacademy.org/video?v=Hh3iY4tdkGI

• 18:18

### 2003 AIME II Problem 14

326 views / 0 likes - added

Trigonometry and geometry to find the area of an equilateral (but not regular) hexagon More free lessons at: http://www.khanacademy.org/video?v=Ec-BKdC8vOo

• 09:36

### 2003 AIME II Problem 12

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Minimum members in a committee More free lessons at: http://www.khanacademy.org/video?v=KD46pC_KFWk

• 16:36

### 2003 AIME II Problem 11.avi

322 views / 0 likes - added

A little trigonometry to figure out the area of a triangle More free lessons at: http://www.khanacademy.org/video?v=smtrrefmC40

• 07:16

### Binary - How to Make a Computer: Part II

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This is Part II of How to Make a Computer. In this series, I'm going to be explaining how to build a computer from the ground up. Using 19th Century technology, you'll discover the inner workings of the most important thing in your life. This episode: bin

• 22:37

### Minecraft Xbox - Herocriptic II - Ooohhh, PARKOUR - Part 1

372 views / 2 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIvln3t11WVGtjMdkEyJMA Map download - http://www.med

• 19:17

### Minecraft Xbox - Herocriptic II - Hidden Entrance - Part 2

334 views / 0 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIvln3t11WVGtjMdkEyJMA Map download - http://www.med

• 01:38

### Crash Course (English Literature) Thought Bubble #3: Romeo & Juliet Part II

356 views / 0 likes - added

We're the graphics team for an awesome show called Crash Course, and we're uploading all the episode Thought Bubbles so you can enjoy them, share them, and reminisce with us. Watch the full Romeo & Juliet (Part II) episode here: https://youtu.be/9J4hoAatG

• 01:11

### Crash Course (English Literature) Thought Bubble #5: The Great Gatsby Part II

322 views / 0 likes - added

We're the graphics team for an awesome show called Crash Course, and we're uploading all the episode Thought Bubbles so you can enjoy them, share them, and reminisce with us. Watch the full Great Gatsby (Part II) episode here: https://youtu.be/cn0WZ8-0Z1Y

• 09:33

### 2-dimensional momentum problem (part 2)

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We finish the 2-dimensional momentum problem More free lessons at: http://www.khanacademy.org/video?v=leudxqivIJI

• 17:17

### How to survive Minecraft (Part II)

99 views / 1 likes - added

Part 2 to how to survive minecraft •Part 1: https://youtu.be/ICaPgiBYq_o •Get the map: http://bit.ly/28O6fCk •on Twit:http://www.twitter.com/truemu •on FB:http://www.facebook.com/minecraftuniverse -TrueMU Store: US:http://bit.ly/TrueMUshirts UK:http://bit

• 13:27 Popular

### World War II Part 1: Crash Course US History #35

728 views / 5 likes - added

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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 14:23

### World War II Part 2 - The Homefront: Crash Course US History #36

549 views / 1 likes - added

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as \$0 to keep up with everything

• 24:14

### Minecraft Xbox - Herocriptic II - DING! - Part 5

311 views / 1 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIv... Map download - http://www.mediafire.com/downl

• 28:35

### Minecraft Xbox - Herocriptic II - Grader - Part 7

287 views / 3 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIv... Map download - http://www.mediafire.com/downl

• 23:13

### Minecraft Xbox - Herocriptic II - Many Minions - Part 3

365 views / 1 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIv... Map download - http://www.mediafire.com/downl

• 22:48

### Minecraft Xbox - Herocriptic II - Battle With Kor - Part 8

315 views / 1 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIv... Map download - http://www.mediafire.com/downl

• 26:16

### Minecraft Xbox - Herocriptic II - Release The Golem! - Part 4

313 views / 1 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIv... Map download - http://www.mediafire.com/downl

• 27:54

### Minecraft Xbox - Herocriptic II - Dark Dungeon - Part 6

319 views / 1 likes - added

Welcome to part 2 of Squid's and my lets play of the Herocriptic adventure map. In this series we play through the entire map and have lots of fun. Enjoy. Map builder - https://www.youtube.com/channel/UCoIv... Map download - http://www.mediafire.com/downl

• 07:57 New

### Crane Puppet Part II: CRANE FEET

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[Rather Simple] Crane Puppet Part II: the FEET! In this video I show how to make origami Crane Feet finger puppets to go with the Crane Head and Wings I taught in this tutorial: https://youtu.be/0NRCQoXagf4The Crane hand puppet I showed in the intro and t

• 12:38

### Frankenstein Part II: Crash Course Literature 206

363 views / 0 likes - added

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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 07:23

### Irregular Plural Nouns, Part II | The Parts Of Speech | Grammar | Khan Academy

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The plural of "whale" is "whales", but what's the plural of "child"? David, Khan Academy's resident grammarian, explains. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower

• 05:49

### Your Sneakers Are Part of the Plastic Problem | National Geographic

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• 07:37

### Why This Problem is IMPOSSIBLE for Computers to Solve (The Halting Problem)

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Start learning today with SkillShare: https://skl.sh/upandatom2 The quantum computer game I talked about: https://phys.cam/game/ Alan Turing proved that the Halting Problem was impossible for Turing machines (computers) to solve. Come find out how. Hi! I'

• 09:36

### Mortgage-backed securities II

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Part II of the introduction to mortgage-backed securities More free lessons at: http://www.khanacademy.org/video?v=eYBlfxGIk28

• 03:31

### Nina Dobrev Takes Selfies With Phones From 2003 to 2014 | WIRED

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In xXx: Return of Xander Cage, The Vampire Diaries star Nina Dobrev plays tech geek Becky Clearidge. So, who better to take us through the history of selfies? Using phones like the infamous Nokia brick and the modern iPhone, Nina tries her best to snap he

• 02:32

### Envisioning Chemistry: Metal Displacement II

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A metal can displace a less reactive metal from its salt solution. Zinc is more reactive than silver, lead, copper, and tin. As a result, when pieces of zinc metal were dropped in the solutions of silver nitrate, lead(II) nitrate, copper(II) sulfate, and

• 10:58

### Phases Of Meiosis II

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Phases of Meiosis II

• 02:15

### Bird vs Fish - Blue Planet II

286 views / 1 likes - added

UK: First episode starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCEarthSub *Bird vs

• 03:59

### Blue Planet II: Hans Zimmer Theme Live Recording - BBC Earth

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Join the musicians for an exclusive look behind the scenes in Vienna during the Blue Planet II music score recording. Watch more of Blue Planet II here: http://bit.ly/BluePlanetIIPlaylist Subscribe to BBC Earth for more amazing animal videos - http://bit.

• 03:20

### Amazing Sperm Whale Cam - Blue Planet II Behind The Scenes

386 views / 2 likes - added

UK: 4th episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCE

• 05:06

### Blue Planet II : The Prequel

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This world-exclusive introduction to the show is narrated by series presenter Sir David Attenborough and set to an exclusive track developed by Hans Zimmer and Radiohead. The prequel features an array of some of the most awe-inspiring shots and highlights

• 01:31

### Houston's 'We Have a Problem' Problem

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The often misquoted line from Apollo 13 astronauts--"Houston, we've had a problem"--comes up a lot in everyday life, and that annoys a lot of Houstonians. Photo: NASA Don’t miss a WSJ video, subscribe here: http://bit.ly/14Q81Xy More from the Wall Street

• 07:55

### Beginning Of World War II

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An overview of the run up to and very beginnings of World War II.

• 02:03

### Incredible Teamwork From Little Clownfish - Blue Planet II

268 views / 0 likes - added

UK: Third episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BB

• 02:56

### How Portuguese Man O' War stings and eats prey - Blue Planet II

236 views / 1 likes - added

UK: 4th episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCE

• 02:25

### Filming Hundreds Of Mobula Rays At Night - Blue Planet II Behind The Scenes

225 views / 1 likes - added

To film Mobula rays at night, the Blue Planet II team use a special camera that allows then to see in almost complete darkness. Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCEarthSub  Details of when Blue Planet II is on in your

• 03:49

### Crab vs Eel vs Octopus - Blue Planet II

313 views / 0 likes - added

UK: 6th episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCE

• 02:34

### Sharks Attack Submarine - Blue Planet II Behind The Scenes

273 views / 1 likes - added

UK: Second episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/B

• 04:19

### The Future Of The Oceans - Blue Planet II

232 views / 0 likes - added

USA: Watch Blue Planet II on BBC America - 9pm Saturdays from 20th January 2018. Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCEarthSub Watch more videos from BBC Earth: Planet Earth http://bit.ly/PlanetEarthPlaylist Blue Planet

• 03:23

### Saving Leatherback Turtles In Trinidad - Blue Planet II

242 views / 0 likes - added

UK: 7th episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCE

• 12:29

### Geithner Plan II

332 views / 0 likes - added

More on the Geithner Plan. The problem of banks buying the assets from themselves. More free lessons at: http://www.khanacademy.org/video?v=n-arbfLTCtI

• 06:14

### 1940 - Axis Gains Momentum In World War II

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In this second video giving an overview of World War II, we see Germany and the Axis powers only continue to gain momentum in 1940.

• 02:55

### Army Of Spider Crabs Shed Their Shells - Blue Planet II

325 views / 2 likes - added

UK: 5th episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCE

• 02:08

### Subtraction / Subtracting Integers - Word Problem

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Subtraction / Subtracting Integers - Word Problem. Here I look at a little word problem dealing with adding and subtracting integers.

• 02:58

### Blue Planet II Official Trailer 2 - BBC Earth

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In 2001, The Blue Planet opened our eyes to the worlds beneath the waves. A generation on, new science and technology allow us to journey deeper than ever before at the most crucial time in our ocean’s history. This is Blue Planet II. Take a deep breath.

• 07:20

### 1943 - Allies Gain Even More Momentum In WW II

325 views / 0 likes - added

In 1943, the tide really turns in favor of the Allies in World War II. They are able to push the Axis out of N.Africa and force a surrender from Italy (along with Mussolini being deposed). The Soviets are able to start pushing the Axis out of the Soviet U

• 02:24

### Reflecting On A Life Filming Below The Waves - Blue Planet II Behind The Scenes

272 views / 0 likes - added

Didier Noirot has spent over 30 years as an underwater cameraman. He shares his thoughts on the health of the oceans and the changes he's seen with his won eyes. USA: Watch Blue Planet II on BBC America - 9pm Saturdays from 20th January 2018. Subscribe -

• 01:19

### Filming Sharks In Protected French Polynesian Waters - Blue Planet II Behind The Scenes

260 views / 1 likes - added

UK: Third episode of Blue Planet II starts 8pm Sunday BBC One. Nordics and Asia : simulcasting on BBC Earth. USA: Early 2018 on BBC America. Details here www.bbcearth.com/blueplanet2 Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BB

• 02:00

### The Tiny Yorkie Who Became a World War II Hero

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World War II had its fair share of heroes: Winston Churchill, Charles de Gaulle, Commander Eisenhower. But one you probably don't recognize is Smoky—a Yorkshire terrier. This is the story of the smallest war hero of the century. SUBSCRIBE: https://goo.gl/

• 08:04

### 1945 - End Of World War II

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1945 marks the end of World War II. V-E Day (Victory in Europe Day) is May 8th 1945. War doesn't end in the Pacific until August of 1945 with the atomic bombing of Hiroshima and Nagasaki.

• 03:14

### Fighting Avalanches With World War II Cannons

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On California’s Mammoth Mountain, the powder is great, but the risks are real. When large snowfalls and intense winds merge into avalanches, things get risky on steep slopes. To keep thousands of skiers and snowboarders safe high in the Sierras, ski patro

• 11:33

### Professional Antigen Presenting Cells (APC) and MHC II complexes

266 views / 0 likes - added

How professional antigen presenting cells present parts of engulfed pathogens on MHC II complexes (major histocompatibility complexes). More free lessons at: http://www.khanacademy.org/video?v=j_kSmmEpvQk

• 19:20

### Limiting Reactant Example Problem 1

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Limiting Reactant Example Problem 1

• 05:04

### Area of a Triangle - Fun challenging math problem

435 views / 0 likes - added

Can you solve the area of a triangle given points X and Y. This is not a basic problem, but it is a fun and challenging math problem. See if you are smart enough to find the area of a triangle for yourself. My name is Chris and my passion is to teach math

• 04:35

### Surface area word problem example

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Surface area word problem example

• 05:03 Popular

### Systems Word Problem With No Solution

856 views / 0 likes - added

Systems word problem with no solution

• 18:53

### Stoichiometry Example Problem 2

253 views / 0 likes - added

Stoichiometry Example Problem 2 More free lessons at: http://www.khanacademy.org/video?v=eQf_EAYGo-k

• 03:24

257 views / 0 likes - added

• 07:25

### Algebra Word Problem - Factoring

322 views / 0 likes - added

Learn how to solve this algebra word problem by factoring. A garden has an area of 84 square feet and the length is 8 feet longer than the width. You must find the dimensions of the garden using factoring. My name is Chris and my passion is to teach math.

• 11:06

### Word Problem Solving 3

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Word problem solving strategies from chapter 3 of ck12.org Algebra I book

• 05:11

### The Mind Body Problem

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The Mind-Body problem is one of the greatest conundrums of philosophy and of our everyday lives too. FURTHER READING “The so-called Mind-Body problem is one of the greatest and most quietly painful conundrums in philosophy – and more importantly, in every

• 12:00

### A Problem You'll Never Solve

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Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMCuriosity Box: https://www.curiositybox.comMrBeasts \$1,000,000 Dilemma: https://youtu.be/NkYCWqzBc7MNewcombs Paradox has confounded philosophers, mathema

• 10:05

### Word Problem Solving 4

269 views / 0 likes - added

Word Problem Solving 4 More free lessons at: http://www.khanacademy.org/video?v=5EdbPz1ZVn0

• 07:31

### Rate Problem Involving Rational Equations

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u15_l2_t1_we3 Rate Problem Involving Rational Equations

• 04:09

### Easy algebra word problem - But can you solve it?

342 views / 0 likes - added

Two workers can build a house in 4 days. One worker can build the house by himself in 6 days. How long would it take the other worker to build the house by himself? Can you solve this easy algebra word problem? My name is Chris and my passion is to teach

• 05:09

### Subtraction Word Problem

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u01_l2_t2_we3 Subtraction Word Problem Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:38

### Algebra word problem - System of Equations

348 views / 0 likes - added

Solve this fun algebra word problem using a system of equations. If each jar has three cookies, one jar will be empty. If each jar has two cookies, there will be one cookie left over. Use a system of equations to find how many cookies and jars we have. My

• 05:07

### Check your intuition: The birthday problem - David Knuffke

421 views / 0 likes - added

View full lesson: http://ed.ted.com/lessons/check-your-intuition-the-birthday-problem-david-knuffke Imagine a group of people. How big do you think the group would have to be before there’s more than a 50% chance that two people in the group have the same

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• 15:14

### IIT JEE Trigonometry Problem 1

387 views / 0 likes - added

2010 IIT JEE Paper I #29 Trigonometry problem More free lessons at: http://www.khanacademy.org/video?v=X7GT9JKoAbo

• 09:50

### Can You Solve This 6th Grade Geometry Problem From China?

653 views / 1 likes - added

What is the total area of the red spots? The diagram involves a rectangle with dimensions of 10 and 20. Inside the rectangle one of its diagonals is connected. There are two circles of equal size that are tangent to each other and the rectangle. The video

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• 10:05

### Work/Energy problem with Friction

273 views / 0 likes - added

A conservation of energy problem where all of the energy is not conserved. More free lessons at: http://www.khanacademy.org/video?v=YvacYWgygaA

• 03:35

### Another Take on the Rate Problem

264 views / 0 likes - added

u15_l2_t1_we3 Another Take on the Rate Problem More free lessons at: http://www.khanacademy.org/video?v=hAy_bavEVCQ Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:07

### 2-dimensional projectile motion part 5

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The second part of the last projectile motion problem

• 05:50

### Discovering underwater lake ecosystems for Blue Planet II #OurBluePlanet - BBC Earth

269 views / 0 likes - added

Brine pools are saltwater lakes at the bottom of our oceans that we know little about. Dive down into the deep sea with the Blue Planet II and Alucia Productions team to discover how they filmed the incredible ecosystems in the Gulf of Mexico. Subscribe t

• 05:24

### Math Challenge - Shrinking Pool Problem

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Think you can solve this math challenge? Every time a boy jumps into the pool it shrinks by a certain amount. Thy boy jumps into the pool 3 times. You must find the original length of the pool My name is Chris and my passion is to teach math. Learning sho

• 07:22

### Word Problem Solving- Exponential Growth and Decay

343 views / 0 likes - added

Word Problem Solving- Exponential Growth and Decay More free lessons at: http://www.khanacademy.org/video?v=m5Tf6vgoJtQ

• 03:40

### Defining A Problem: Crash Course Kids #18.1

402 views / 0 likes - added

So, how do engineers even figure out what problem needs to get fixed? And what's the difference between identifying a problem and just complaining about something. In this episode of Crash Course Kids, Sabrina talks about how we can all be better Engineer

• 08:02

### Algebraic Word Problem

268 views / 0 likes - added

U02_L1_T3_we1 : Algebraic Word Problem More free lessons at: http://www.khanacademy.org/video?v=cNlwi6lUCEM Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:08

### Basic Rate Problem

211 views / 0 likes - added

U03_L2_T3_we2 : Basic Rate Problem More free lessons at: http://www.khanacademy.org/video?v=7WXijfIZh64 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:22

### Application problem with graph

279 views / 0 likes - added

u13_l1_t2_we4 Application problem with graph More free lessons at: http://www.khanacademy.org/video?v=ljROszF_rqs Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 08:16

### Three Equation Application Problem

179 views / 0 likes - added

u14_l3_t1_we3 Three Equation Application Problem More free lessons at: http://www.khanacademy.org/video?v=TJaHNxJk5-4 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:47

### Imaginary Numbers Are Real [Part 1: Introduction]

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More information and resources: http://www.welchlabs.com Imaginary numbers are not some wild invention, they are the deep and natural result of extending our number system. Imaginary numbers are all about the discovery of numbers existing not in one dimen

• 02:19

### Subtracting Decimals Word Problem

229 views / 0 likes - added

U03_L2_T1_we3 Subtracting Decimals Word Problem More free lessons at: http://www.khanacademy.org/video?v=hy_bDS3aHO4 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:19

### Graphical Systems Application Problem

317 views / 0 likes - added

u14_l1_t1_we5 Graphical Systems Application Problem More free lessons at: http://www.khanacademy.org/video?v=3mimxluSVBo Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 05:53

### Application Problem with Quadratic Formula

207 views / 0 likes - added

u16_l5_t2_we5 Application Problem with Quadratic Formula More free lessons at: http://www.khanacademy.org/video?v=OZtqz_xw0SQ Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:39

### Multiplying Fractions Word Problem

306 views / 0 likes - added

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### Dividing Fractions Word Problem

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U02_L2_T3_we5 Dividing Fractions Word Problem More free lessons at: http://www.khanacademy.org/video?v=PQsgXNggV7Q Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

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We all have our own unique, everyday routines. But it turns out that not only us mere mortals have our little quirks! Her Majesty, Queen Elizabeth II has habits she sticks to as well! Have you ever wondered why the Queen always carries her purse with her

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The earliest celluloid film was shot by Louise Le Prince using the Le Prince single-lens camera made in 1888. It was taken in the garden of the Whitley family house in Oakwood Grange Road, Roundhay, a suburb of Leeds, Yorkshire, Great Britain, possibly on

• 08:22

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u12_l3_t1_we3 Applications Problem Factoring Quadratics More free lessons at: http://www.khanacademy.org/video?v=STcsaKuW-24 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

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### The Square-Sum Problem - Numberphile

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Learning Calculus limits is a breeze with this problem and introduction. This example is an easy problem. Check out my Calculus limits playlist if you want some harder examples. I also offer live tutoring if you need any extra help. Check out my website i

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### World War II, A War for Resources: Crash Course World History #220

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In which John Green teaches you about World War II, and some of the causes behind the war. In a lot of ways, WWII was about resources, and especially about food. The expansionist aggression of both Germany and Japan were in a lot of ways about resources.

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### Adding Mixed Numbers Word Problem

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### Subtracting Mixed Numbers Word Problem

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Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom. In which John Green teaches you about World War II, aka The Great Patriotic War, aka The Big One. So how did this war happen? And wha

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### The Centrifuge Problem - Numberphile

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### Fluids (part 11)

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Clarification of the problem in part 10 More free lessons at: http://www.khanacademy.org/video?v=HnfBFeLunk4

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Greg talks to submarine pilot team leader Buck about how submarines work and what it was like helping the Blue Planet II team film in the deep ocean. Subscribe to Earth Lab: http://bit.ly/SubscribeToEarthLab Earth Lab Originals http://bit.ly/EarthLabOrigi

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10 years ago Planet Earth changed our view of the world. Now we take you closer than ever before. This is life in all its wonder. This is Planet Earth II. A decade ago, the landmark television series Planet Earth redefined natural history filmmaking, givi

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Can You Solve the Haunted Hopscotch Problem? Grab your chalk and rocks because Number Wunderkid Izzy has challenged you to solve this spooky problem. Will Jon wake up before the Zombie strikes? Will Gary sink into quicksand before his friend can save him?

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288 views / 1 likes - added

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Radiohead, one of the world’s most acclaimed rock bands, and Hans Zimmer, one of the planet’s most successful movie and TV composers, have joined forces to produce an exclusive track for BBC America’s upcoming natural history series, Pla

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### SAT Prep: Test 1 Section 6 Part 6

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A little more on problem 17 and problem 18 on page 412.

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### Fluids (part 9)

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Second part of the Bernoulli's Equation proof. Beginning of a problem that uses the equation. More free lessons at: http://www.khanacademy.org/video?v=QX2YLR09Q78

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"Frozen 2" is the long-awaited follow-up to the 2013 Disney animated smash hit featuring characters like Elsa, Anna, Olaf, Kristoff, and Sven. For the sequel, animators updated Anna and Elsa's outfits, re-built parts of Arendelle, and figured out how to t

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In the figure, what is the value of angle x? This problem is known as Langley's Adventitious Angles. It is also known as the hardest easy geometry problem because it can be solved by elementary methods but it is notoriously difficult to work out. Can you

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2010 Paper 1 problem 31 Math (part 1) More free lessons at: http://www.khanacademy.org/video?v=bV_HSZ_W0nk

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Ian Stewart explains the Monty Hall problem and its solution. Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Monty Hall problem became infamous in the 1990s where newspaper columnist and puzzle solver Marilyn vos Savant offered a solu

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2010 Paper 1 problem 31 Math (part 2).avi More free lessons at: http://www.khanacademy.org/video?v=S3KMyYYGuPE

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### IIT JEE Complex Numbers (part 1)

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2010 IIT JEE Paper 1 Problem 39 Complex Numbers (part 1) More free lessons at: http://www.khanacademy.org/video?v=_5ei_I02huY

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### IIT JEE Complex Numbers (part 2)

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2010 IIT JEE Paper 1 Problem 39 Complex Numbers (part 2) More free lessons at: http://www.khanacademy.org/video?v=pQwoBOpVoWw

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### IIT JEE Complex Numbers (part 3)

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2010 IIT JEE Paper 1 Problem 39 Complex Numbers (part 3) More free lessons at: http://www.khanacademy.org/video?v=FwA_UZkI-JM

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### How Hans Zimmer and Radiohead transformed "Bloom" for Blue Planet II

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Radiohead's "Bloom," remixed for the ocean. Subscribe to our channel! http://goo.gl/0bsAjO If you listen closely enough to Radiohead and Hans Zimmer’s rework of “Bloom” for Blue Planet II, you can hear a really fascinating orchestral trick at work. They c

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London is in the midst of an air pollution crisis, but it’s not a new problem. The Great Smog of 1952 caused the deaths of 12,000 people in just four days. Back then, as London choked on chimney fumes, one project had an innovative solution. Subscribe to

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### Ratio Word Problem: Boys To Girls | Pre-Algebra | Khan Academy

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In this example, we are given a ratio and then asked to apply that ratio to solve a problem. No problem! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/rat

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Eat your peas! It’s the easiest way to fight climate change. This is the fourth episode of Climate Lab, a six-part series produced by the University of California in partnership with Vox. Hosted by Emmy-nominated conservation scientist Dr. M. Sanjayan, th

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This problem was given to Primary 6 (age 11-12) students in Singapore. What is the area of the shaded region in the video, which consists of the region bounded by 4 quarter circles in a 3x3 grid of squares, and each square has a side length of 4? The shad

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Do you like using your imagination to build things that solve problems? If you do, you're thinking like an engineer! Learn how engineers identify and solve problems, then help Jessi with a big problem of her own! ---------- Love SciShow Kids and want to h

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AJ finds it annoying that he can't reach his own back when applying sunscreen, so Joseph and his team make a machine to do it automatically. What's Your Problem? is a new series in which Joseph and his team solve really annoying problems by making hilario

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### IIT JEE Circle Hyperbola Common Tangent Part 5

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2010 IIT JEE Paper 1 Problem 45 Circle Hyperbola Common Tangent Part 5 More free lessons at: http://www.khanacademy.org/video?v=rPoqpQcgNv4

• 10:45

### IIT JEE Circle Hyperbola Common Tangent Part 2

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2010 IIT JEE Paper 1 Problem 45 Circle Hyperbola Common Tangent Part 2 More free lessons at: http://www.khanacademy.org/video?v=0imeUgSxR10

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### IIT JEE Circle Hyperbola Common Tangent Part 3

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2010 IIT JEE Paper 1 Problem 45 Circle Hyperbola Common Tangent Part 3 More free lessons at: http://www.khanacademy.org/video?v=RomnHMWSLoE

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### IIT JEE Circle Hyperbola Common Tangent Part 4

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2010 IIT JEE Paper 1 Problem 45 Circle Hyperbola Common Tangent Part 4 More free lessons at: http://www.khanacademy.org/video?v=eGo8C2Jshzs

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### The 8 Queen Problem - Numberphile

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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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This collection of Envisioning Chemistry includes 5 films: 1. Getting Hot (with Thermal Imaging) 2. Everyday Fire (in Slow Motion) 3. Disappearing Metals (Aluminum, Magnesium, Copper, Lithium, Sodium, Potassium) 4. Elemental Burning (Carbon, Sodium, Phosp

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The Josephus Problem, featuring Daniel Erman from University of Wisconsin-Madison. Winning at Dots and Boxes: https://youtu.be/KboGyIilP6k NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Number

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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://

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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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This problem is said to come from a test given to a Chinese kindergarten class (5 year olds). It was posted online and caused a lot of debate as adults were stumped about the correct answer, some saying it is impossible. Can you figure it out? This video

• 04:30

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"If Sue runs around the track twice, and John runs around the track four times more than Sue, how many times does John run around the track?" This problem was given to 3rd graders. A parent disagreed with the answer the teacher was marking. After it was p

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Clarence and Sumo dig a tunnel and discover some life-changing news from the episode, "Sumo Goes West." CN GAMES: http://bit.ly/CNGames SUBSCRIBE: http://bit.ly/109Y6wq WATCH MORE: http://bit.ly/1jq0JYj About Clarence: With his friends Sumo and Jeff, Clar

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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

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Fun word problem that is almost a brain teaser. Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/patterns-in-sequences-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI

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This video features Dr Hannah Fry (more links below) ↓↓↓ Check out Brilliant.org: https://brilliant.org/numberphile (20% off premium subscription) That circle cutting problem on Brilliant: https://brilliant.org/NumberphileSandwich Hannah Fry on Twitter: h

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358 views / 1 likes - added

Where are all the aliens? The universe is too big and too old, why have we not met aliens yet? Do they live in computers? Were they wiped out by an ancient super intelligence? Or are we just to primitive to understand their motives? Whatever the answer is

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Marceline sings about her anger with Princess Bubblegum! CN GAMES: http://bit.ly/CNGames SUBSCRIBE: http://bit.ly/109Y6wq WATCH MORE: http://bit.ly/CNAdventureTime About Adventure Time: Unlikely heroes Finn (a silly kid with an awesome hat) & Jake (a bras

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Surveys have found 80 percent get this logic problem wrong. Alice is looking at Bob, and Bob is looking at Charlie. Alice is married; Charlie is not. Is a married person looking at an unmarried person? Answer choices are A) Yes, B) No, and C) Cannot be de

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Part 3 - https://youtu.be/PKVNDsWL8rw Welcome to my lets play on Kings Quest: A Knight To Remember. In this series I will be playing through the entire first chapter with commentary. Enjoy. Find out more about the game - http://www.sierra.com/kingsquest T

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This problem is making the rounds. Can you place numbers in the four boxes so all the equations are true? Blog post (text/image explanation): http://wp.me/p6aMk-4up If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecis

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Time lapse of frost and ice crystals forming on my kitchen window. Music: "Yamasong (Campagna Remix)" by On Ensemble (edited for length). Each clip is 4-7 hours of realtime freezing, after melting off the overnight frost accumulation with a hair dryer. Th

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### The Illumination Problem - Numberphile

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### The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

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A lot of people are arguing over the correct answer to this algebra problem involving horses, horseshoes, and boots. A Facebook post with this problem has over 500,000 comments. Can you figure it out? In this video I explain the correct answer. Blog post:

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Another example of figuring out the sine, cosine, and tangent of an angle in a right triangle

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445 views / 1 likes - added

This problem has over 2 million comments on Facebook and is getting coverage in mainstream media and blogs. Can you figure out this Facebook fruit algebra puzzle involving apples, bananas, and coconuts? The video presents what many people consider to be t

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Silicon transistors allowed computers to shrink from the size of houses to watches in a short time, but engineers are facing a problem: we've almost hit the limit on how small silicon transistors can get.Hosted by: Olivia GordonSciShow has a spinoff podca

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### Envisioning Chemistry: Bubbling II

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Bubbles are generated when gases are produced by chemical reactions in solution. In this film, 8 gas-generating reactions were recorded with a macro lens to show the bubbling formation in great details. Can seashells give bubbles too? You will find out in

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Part 12 - https://youtu.be/s1v04a5Hem0 Welcome to a new adventure map. In this series I will be playing through the entire map with Ballistic Squid. Enjoy. Map builder - https://www.youtube.com/channel/UC30RRHqxlSh-_wbZJz1QYog Map download - coming soon.

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### Envisioning Chemistry: Elemental Burning II

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Elements can burn, some burn brightly, some burn beautifully, and some transform into weird shapes after burning. As a sequel to Elemental Burning, here we show the combustion of 4 more elements: lithium, hydrogen, iron, and potassium. For more films, ple

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### Envisioning Chemistry: Chemical Garden II

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When a piece of metal salt is dropped in the solution of sodium silicate, a membrane of insoluble metal silicate is formed. Due to the osmotic pressure, water enters the membrane and breaks it, generating more insoluble membranes. This cycle repeats and t

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### World War II In The Pacific In 1942

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In 1942, the United States begins to fully engage against the Japanese and go on the offensive.

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Please consider supporting our videos on Patreon https://www.patreon.com/simplehistory Resistance soon took place in different ways after Charles de Gaulle encouraged the fight to continue after the impending German occupation. Groups such as the Maquis -

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2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

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### Percent Word Problem Example 2 | Decimals | Pre-Algebra | Khan Academy

300 views / 0 likes - added

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

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More intuition on centripetal acceleration. A simple orbit problem.

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Another example of a 2-dimensional projectile motion problem

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The Rescued Film Project discovers and processes 31 rolls of film shot by an American WWII soldier over 70 years ago. Please consider becoming a Patron: patreon.com/rescuedfilm

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Hank gets to the more violent part of community ecology by describing predation and the many ways prey organisms have developed to avoid it. Like SciShow: http://www.facebook.com/scishow Follow SciShow: http://www.twitter.com/scishow TABLE OF CONTENTS Her

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Puzzle through a set of hypothetical health studies and headlines and see if you can spot whats misleading about the headline.--In medicine, theres often a disconnect between news headlines and the scientific research they cover. While headlines are desig

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The Harvard admissions exam in 1869 included this algebra problem: "A man bought a watch, a chain, and a locket for \$216. The watch and locket together cost three times as much as the chain, and the chain and locket together cost half as much as the watch

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### SAT Prep: Test 5 Section 3 Part 6

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Problem 18 on page 657

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### SAT Prep: Test 2 Section 3 Part 6

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Problem 20 on page 464

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### SAT Prep: Test 6 Section 7 Part 6

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Problem 20 on page 738

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Problem 16 on page 615

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### SAT Prep: Test 5 Section 3 Part 3

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More on problem 8 on page 654 and 9-11.

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Word problems force us to put concepts to work using real-world applications. In this example, determine the volume of frozen water and express the answer as a fraction. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.o

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In 1942 we see the Axis get pushed back in North Africa and get bogged down in the Soviet Union. The tide of war turns in favor of the Allies.

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The rest of problem 20 on page 796

• 01:45

### SAT Prep: Test 3 Section 4 Part 5

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The leftover of problem 18 on page 535

• 05:39

### Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD

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Thanks to Eric from Miami for suggesting this problem and sending a solution! The diagram shows a quadrilateral ABCD with the values for some angles and the length of AB. Can you figure out the area of ABCD? Subscribe: https://www.youtube.com/user/MindYou

• 07:07

### Circuits (part 4)

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A hairy resistance problem More free lessons at: http://www.khanacademy.org/video?v=3NcIK0s3IwU

• 01:30

### Robotic Ray Is Part Animal, Part Machine

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Light-controlled cardiac muscle cells guide swimming of an artificial animal. Learn more: http://scim.ag/29rkDCn Read the research: http://scim.ag/29lax1u JOIN AAAS: http://scim.ag/2bxrxnH

• 01:25

### SAT Prep: Test 2 Section 6 Part 4

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A redo of problem 14 on page 475 because I can't do arithmetic

• 10:19

### Tension (part 2)

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A slightly more difficult tension problem. More free lessons at: http://www.khanacademy.org/video?v=zwDJ1wVr7Is

• 08:02

### Thermodynamics (part 5)

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Example problem involving PV=nRT More free lessons at: http://www.khanacademy.org/video?v=UekR9J31a2o

• 03:16

### Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

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What is angle A in the star-shaped figure? This problem appeared on the 1999 AMC 8 test (intended for 8th grade students in the US). Approximately 75% of test-takers did not mark the correct response. Can you figure it out? Watch the video for a solution.

>> View 2003 AIME II Problem 4 (part 1) web videos