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• 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

• 09:50

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

654 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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• 05:57

### Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"

553 views / 1 likes - added

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

• 03:05

### Writing and Interpreting Numerical Expressions Song for 5th Grade

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Writing and Interpreting Numerical Expressions SongGrades: 5th Grade - 6th Grade Check out our ever-growing library of math songs at https://www.numberock.com. ----------------------------------------------------Are you interested in learning about readin

• 02:07

### Perimeter & Area Song │ 3rd Grade Math Video For Elementary School Students

563 views / 0 likes - added

1. Perimeter & Area Lesson: https://www.teacherspayteachers.com/Product/Perimeter-and-Area-Worksheets-Word-Problems-Quiz-Homework-Music-Video--2429557 ◀--- Opens in New Window 2. LIMITED TIME OFFER! Save 80% by buying our complete collection: https://www.

• 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.

• 04:13

### Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

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A marshmallow has the shape of a cylinder with diameter 5 and height 3. A dessert is made with 24 marshmallows: there are two stacked layers of marshmallows, and each layer has 3 rows of 4 marshmallows. The gaps between the marshmallows are filled with ch

• 02:46

### Adding Decimals Song for Kids | Includes Subtracting Decimals | 4th & 5th Grade

404 views / 0 likes - added

Enjoy our growing library of math videos at https://www.numberock.com ◀ SAFE LINK VIDEO'S LESSON PLAN: https://www.teacherspayteachers.com/Product/Adding-and-Subtracting-Decimals-with-Decimal-Place-Value-Videos-Activity-3340623 ◀ Safe Link NUMBEROCK DIGIT

• 04:05

### How To Find Mistakes In One Step Equations | 6th Grade | Khan Academy

358 views / 0 likes - added

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

• 05:04

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

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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

• 05:48

### What Is The Area? "You Should Be Able To Solve This"

158 views / 0 likes - added

Thanks to Reio in Romania for emailing me this fun problem! What is the area? This puzzle was shared with the tagline "you should be able to solve this." Solution to 5th grade Chinese challenge problem https://youtu.be/OuJQaxZvlYs My blog post for this vi

• 04:35

### Surface area word problem example

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Surface area word problem example

• 04:32

### How To Solve One-step Equations With Fractions And Decimals | 6th Grade | Khan Academy

571 views / 0 likes - added

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-

• 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'

• 13:46

### Math Videos For 3rd, 4th, And 5th Grade: GEOMETRY MATH SONGS

539 views / 3 likes - added

This fun video playlist goes along with a Geometry Unit with matching animation that can be purchased here: Teachers Pay Teachers Geometry Unit: https://www.teacherspayteachers.com/Product/Geometry-Unit-2459996 ◀--- Opens in New Window ____ Our closest fr

• 03:46

### Testing Whether Area Is Proportional To Side Length | 7th Grade | Khan Academy

298 views / 0 likes - added

Is the volume of a square proportional to the side length of the square? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-ide

• 03:35

### Can You Solve the Haunted Hopscotch Problem? | NUMBER CRUSHERS

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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?

• 02:03

### Multiplying Decimals Song for 5th Grade | How to Multiply by a Decimal Rap

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• 03:56

### Place Value Song For Kids | Ones, Tens, and Hundreds | 1st Grade, 2nd Grade, 3rd Grade]

693 views / 0 likes - added

Place Value Song for Kids by NUMBEROCK | 1st Grade, 2nd Grade, 3rd Grade, 4th Grade | Includes Thousands and Milllons. Buy our EBOOK and Lesson Library for 70% off: https://www.teacherspayteachers.com/Product/Printables-Worksheets-for-Cool-Math-Video-Less

• 04:09

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

343 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

• 03:21

### Fractions on a Number Line Song for 3rd Grade & 4th Grade

475 views / 0 likes - added

Enjoy our growing library of math videos at https://www.numberock.com ◀ Safe Link 1. VIDEO'S LESSON PLAN: COMING SOON! 2. NUMBEROCK DIGITAL LIBRARY 70% OFF: https://www.teacherspayteachers.com/Product/Math-Worksheets-More-NUMBEROCK-Musical-Math-Workbook-a

• 12:00

### A Problem You'll Never Solve

78 views / 0 likes - added

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

• 08:45

### China's Ping Pong Proteges | A China Icons Video

244 views / 1 likes - added

China is the undisputed champion of the ping pong world, winning a whopping 24 gold medals out of a possible 28 since it became an Olympic sport in 1988. China Icons filmed inside one of the country's premier sports schools to find out why the nation's pi

• 03:45

### FIND THE HIDDEN MEANING & TEST YOUR BRAIN - Solve Logo Test

355 views / 0 likes - added

FIND THE HIDDEN MEANING & TEST YOUR BRAIN - Solve Logo Test More Riddles Videos: 1. Can You Pass the Riddles Challenge - Part 7 https://www.youtube.com/watch?v=B4QYXWze82Y 2.10 Riddles Only High IQ Kids Can Solve https://www.youtube.com/watch?v=tgpz8gW0e6

• 03:28

### Flower Math Problem - Adults Stumped By Question For Kids In China

454 views / 2 likes - added

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

• 07:26

### Why China is building islands in the South China Sea

292 views / 0 likes - added

China claims they aren't military bases, but their actions say otherwise. Subscribe to our channel! http://goo.gl/0bsAjO China is building islands in the South China sea and its causing disputes among the other nations in the region; Malaysia, the Philipp

• 03:05

### Skip Counting by 2 Song | For 1st Grade & 2nd Grade Teachers

27 views / 0 likes - added

You're cordially invited to come check out our growing library of award-winning math video animations at https://www.numberock.com Thank you for watching our Skip Counting by 2 Song for Kids | For 1st Grade & 2nd Grade ------------------------------------

• 04:30

352 views / 0 likes - added

"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

• 03:08

### Skip Count by 10 Song For Kids | 1st Grade - 2nd Grade Video

30 views / 0 likes - added

You're cordially invited to come check out our growing library of award-winning math video animations at https://www.numberock.com Thank you for watching our Skip Counting by 10 Song for Kids | For 1st Grade & 2nd Grade -----------------------------------

• 03:09

### Can You Solve The Marriage Logic Problem? 80% Fail

290 views / 0 likes - added

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

• 10:50

### China's Geography Problem

345 views / 0 likes - added

Animation by Josh Sherrington (https://www.youtube.com/heliosphere) Sound by Graham Haerther (http://www.Haerther.net) Thumbnail by Joe Cieplinski (http://joecieplinski.com/) This video was partially inspired by a chapter in Tim Marshall's "Prisoners of G

• 08:05

### Can You Solve The Hardest Easy Geometry Problem?

456 views / 1 likes - added

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

• 03:48

### Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

355 views / 0 likes - added

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

• 02:35

### ABCD Poem | Popular Nursery Rhyme For Kids | Peekaboo

379 views / 0 likes - added

Enjoy and learn the Alphabets with the help of this popular nursery rhyme 'ABCD Poem' along with the Dubby Dubs. Hey kids! Let's learn the alphabets A to Z along with the Dubby Dubs. Find the lyrics of the song below and sing along. Do post your comments

• 01:14

### How to Multiply to Get the Area of a Parallelogram

417 views / 0 likes - added

How to Multiply to Get the Area of a Parallelogram. Part of the series: Perimeter, Area and Decimals. Multiplication is one way you can find the area of a parallelogram pretty easily. Multiply to get the area of a parallelogram with help from a longtime m

• 04:08

### Can Plastic-Eating Worms Solve Our Trash Problem?

605 views / 1 likes - added

Plastics are everywhere, and we can’t seem to get rid of them. Could a worm be the solution we need? Does Recycling Actually Help? ►►►► http://dne.ws/16zXnMX DNews Live Tickets Here ►►►► http://dne.ws/1Fa2OCh Read More: Why Doesn't Plastic Biodegrade? htt

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• 14:20

### Matrices to solve a vector combination problem

271 views / 0 likes - added

Using matrices to figure out if some combination of 2 vectors can create a 3rd vector More free lessons at: http://www.khanacademy.org/video?v=gsNgdVdAT1o

• 04:26

### Line Riders - Beethoven's 5th

470 views / 2 likes - added

I spent over 3 months synchronizing a line rider track to Beethoven's 5th drawing everything by hand. There is no animation happening here. Any time a character leaves the screen they are being directed by unseen lines to the next location. This is not th

• 03:51

### Can You Solve This MIT Admissions Question? Geometry Problem, 1869

358 views / 0 likes - added

The Massachusetts Institute of Technology (MIT) is one of the top ranked universities in the world. This question appeared on its admissions exam nearly 150 years ago. "The perpendicular dropped from the vertex of the right angle upon the hypotenuse divid

• 08:17

### ONLY A GENIUS CAN SOLVE THIS IN 20s (If You Solve 13/15 You Are Smarter Than Einstein!)

504 views / 0 likes - added

Only a genius can solve this mind test in 20s! Only the cool stuff, try to find the letter N and many more to test your intelligence. If you solve 10 out of 15 you are smarter than 80% of people, if you find 13 or more you might be smarter than Einstein!

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• 01:34

### Gene-edited pigs could solve America's transplant problem

237 views / 0 likes - added

The latest advance in Crispr technology is a new kind of virus-free gene-edited pig. Scientists are hot on the hunt to figure out a way to transplant pig organs into humans. But a growing concern is retroviruses in pig cells that could infect humans. Read

• 06:29

### How To Use The Distributive Property With Variables | 6th Grade | Khan Academy

368 views / 0 likes - added

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

• 04:32

### The Zeroth Power | Arithmetic Operations | 6th Grade | Khan Academy

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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

• 03:40

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

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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

• 02:37

### How To Write Basic Expressions With Variables | 6th Grade | Khan Academy

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• 03:27

### How To Evaluate Expressions In Two Variables With Decimals And Fractions | 6th Grade | Khan Academy

436 views / 0 likes - added

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

• 07:51

### How To Solve One-step Multiplication And Division Equations With Fractions And Decimals

416 views / 0 likes - added

"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/

• 02:54

### How To Describe Real-world Situations With Inequalities | 6th Grade | Khan Academy

283 views / 0 likes - added

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

• 04:22

### How to Determine the Area of a Triangle Based on Coordinates of Its Vertices & Determinants

231 views / 0 likes - added

How to Determine the Area of a Triangle Based on Coordinates of Its Vertices & Determinants. Part of the series: Finding and Using the Area of a Triangle. You can use the coordinates of a triangle's vertices and determines, along with a very specific rule

• 04:21

### How To Write One-step Equations For Word Problems | 6th Grade | Khan Academy

459 views / 0 likes - added

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

• 05:15

261 views / 0 likes - added

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

• 03:09

### How To Write Basic Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

351 views / 0 likes - added

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

• 04:42

### How To Write Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

515 views / 0 likes - added

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

• 01:58

### How To Find Equivalent Expressions By Combining Like Terms And Using The Distributive Property

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• 03:28

### Why Did China Send a Probe to the Far Side of the Moon?

136 views / 0 likes - added

For the first time in history, there is a rover on the far side of the moon and the Chang’e 4 mission is just beginning to explore this hidden side. How Close Are We to Completely Mapping the Ocean? - https://youtu.be/KoOxTV3QIrM Read More: China’s Chang’

• 02:36 Popular

### Julian Newman: The 5th Grader Who Starts For A High School Basketball Team

807 views / 1 likes - added

Despite being just 4' 5" and 70 pounds -- and being in fifth grade! -- Julian Newman is the starting point guard for Downey Christian School in Orlando, Florida. Check out his amazing story! He'll be on Oprah and Conan this week showing off his considerab

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• 02:55

### The Area Model Of Multiplication Song: Multiplication Songs For Elementary Students

686 views / 0 likes - added

Get this video's Companion Worksheet Set + Lesson Plan at: 1. Teachers Pay Teachers - https://www.teacherspayteachers.com/Product/Multiplication-Song-Using-The-Area-ModelSingapore-Method-Lesson-Materials-2299076 2. TES - https://www.tes.com/us/teacher-les

• 03:38

### Counting to 100 With BIG Numbers Song for Kids | Kindergarten, 1st Grade

667 views / 0 likes - added

Save 70% on all our lessons by buying complete video and lesson library: https://www.teacherspayteachers.com/Product/Math-Worksheets-More-NUMBEROCK-Musical-Math-Workbook-and-Activities-2200780 ◀ Safe Link NUMBEROCK DVD Links Below: NUMBEROCK 3rd Grade Mat

• 03:53

385 views / 0 likes - added

• 04:58

### Comparing Fractions Of Different Wholes | Fractions | 3th Grade | Khan Academy

403 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.

• 03:24

### China Has A Rover On The Moon & Here’s What It Found

368 views / 1 likes - added

The U.S. hasn’t been back to the moon since 1972. China on the other hand has rover exploring its surface. What have they found? Does The Moon Really Control The Tides? ►►►► http://bit.ly/1RU1uqT Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly

• 15:13

### Inside China's Only Pinball Machine Factory

222 views / 0 likes - added

Thanks to LastPass for sponsoring this video. Go here to find out more: http://bit.ly/2U2NOjp Today we're going on a tour of the only pinball machine factory in China. We get to see how they're rapidly prototyping and making hundreds or maybe even thousan

• 03:36

### China Makes Historic Moon Landing, Boosting Rivalry With U.S.

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China gained on the U.S. in the new space race by making the first-ever landing on the far side of the moon. What's driving China’s ambitions and should the U.S. be nervous? The WSJ explains. Photo: China National Space Administration/Shutterstock Don’t m

• 01:14

### Disneynature's Born In China Official US Trailer

479 views / 3 likes - added

Disneynature, in its ongoing quest to bring the natural world to the big screen as never before, presents its most ambitious project to date, taking moviegoers on a grand journey into the wilds of China. “Born In China” follows the adventures of three ani

• 02:00

### Wildlife of China

294 views / 1 likes - added

Let's explore the animals of China! Support the cartoons on patreon: https://www.patreon.com/simplehistory?ty=a Get your copy of Simple Geography: China. http://www.amazon.com/Simple-Geography-China-Guides/dp/1517583527/ref=asap_bc?ie=UTF8 Simple Geograph

• 12:14

### Using the Convolution Theorem to Solve an Initial Value Prob

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Using the Convolution Theorem to solve an initial value problem More free lessons at: http://www.khanacademy.org/video?v=rfyq32mHcYs

• 14:25

### China is erasing its border with Hong Kong

300 views / 0 likes - added

The border has an expiration date. Follow Johnny on Instagram: https://www.instagram.com/johnnywharris/ Follow the Vox Borders watch page: https://www.facebook.com/VoxBorders/ Subscribe to our channel! http://goo.gl/0bsAjO With original music by Tom Fox h

• 04:03

### FIND The Microphones! Wheels On The Bus Sing-A-Long | Find It Games | Cool School

69 views / 0 likes - added

Order Drew Travels to Ancient Egypt AND Drew Pendous and The Camp Color War http://bit.ly/2FtNvJ1Sing-a-long with us as we sing the Wheels on the Bus BUT see if you're able to find all the hidden microphones! Subscribe to Cool School's Channel: http://bit

• 02:39

### Proportionality Between Side Length And Perimeter | 7th Grade | Khan Academy

329 views / 0 likes - added

Is the perimeter of a square proportional to the side length of the square? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-

• 17:04

### Can You Find the Candy Canes? Snow Queen Find It Game w/ Ms. Booksy! | Fun Kids Games at Cool School

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Do you guys remember the end of the Snow Queen with Ms. Booksy? At the end of chapter 6, Gerda, the toucan, and the reindeer were on their way to save Kay. Let’s watch chapters 7 & 8 again, and see if you can find the hidden candy canes! Tell us in the co

• 00:59

### Average Height Of A Building's Floor | Multiplication And Division | 3th Grade | Khan Academy

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• 02:51

329 views / 0 likes - added

• 02:45

### Area of a Circle

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u07_l2_t3_we3 Area of a Circle

• 02:44

### Area of a Trapezoid

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u07_l2_t2_we2 Area of a Trapezoid

• 02:57

### Banana Proportionality | Rated And Proportional Relationships | 7th Grade | Khan Academy

313 views / 0 likes - added

• 05:30

### Intuition For Area Of A Triangle

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Intuition for area of a triangle

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• 02:57

### Intuition For Area Of A Parallelogram

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Intuition for area of a parallelogram

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• 01:34

### Area Of Rectangle As A Polynomial

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Area of rectangle as a polynomial

• 04:00

### Area of an isosceles triangle

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Area of an isosceles triangle

• 04:51

### Relating circumference and area

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Relating circumference and area

• 06:57

### Area Of Triangle In Grid

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Area of triangle in grid

• 01:31

### Example finding area of triangle

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Example finding area of triangle

• 02:25

### Surface Area Of A Box

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Surface area of a box

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• 04:16

### China keeps peg but diversifies holdings

249 views / 0 likes - added

China keeps peg but diversifies holdings More free lessons at: http://www.khanacademy.org/video?v=4aNoZjAhSr8

• 02:36

### Review of China US currency situation

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Review of China US currency situation More free lessons at: http://www.khanacademy.org/video?v=DtlFQ_nNaQM

• 03:26

### Floating Exchange Effect on China

321 views / 0 likes - added

Floating Exchange Effect on China More free lessons at: http://www.khanacademy.org/video?v=vrGNXAGmfCM

• 04:30

### What Makes The Great Wall Of China So Extraordinary - Megan Campisi And Pen-Pen Chen

684 views / 1 likes - added

View full lesson: http://ed.ted.com/lessons/what-makes-the-great-wall-of-china-so-extraordinary-megan-campisi-and-pen-pen-chen The Great Wall of China is a 13,000-mile dragon of earth and stone that winds its way through the countryside of China. As it tu

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• 03:03

### Longer or Shorter Song | Comparing Measurements | Kindergarten to 2nd Grade

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Video: Longer or Shorter | Longest or ShortestGrade Levels: Kindergarten - 2nd Grade Check out our ever-growing library of math songs at https://www.numberock.com. ----------------------------------------------------Q. I'd like to show my students this vi

• 03:01

### China Pegs to Dollar to Keep Trade Imbalance

344 views / 0 likes - added

China Pegs to Dollar to Keep Trade Imbalance More free lessons at: http://www.khanacademy.org/video?v=uTlh861MtYk

• 03:34

### Finding Surface Area Using Net

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Finding surface area using net

• 03:47

### Example Finding Area With Fractional Sides

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Example finding area with fractional sides

• 03:55

### Area Model For Multiplying Binomials

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Area model for multiplying binomials

• 02:09

### Dimensions Of Rectangle For Algebraically Described Area

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Dimensions of rectangle for algebraically described area

• 02:08

### Area Of Parallelogram On Coordinate Plane

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Area of parallelogram on coordinate plane

• 04:44

### Surface Area Of A Box Using Nets

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Surface area of a box using nets

• 06:30

### Multiplying Polynomials Using Area Model

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Multiplying polynomials using area model

• 06:12

### Area and Perimeter of Composite Figures

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u07_l2_t3_we4 Area and Perimeter of Composite Figures

• 12:11

### Communists, Nationalists, and China's Revolutions: Crash Course World History #37

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Don't forget! Crash Course posters and t-shirts at http://www.dftba.com/crashcourse In which John Green teaches you about China's Revolutions. While the rest of the world was off having a couple of World Wars, China was busily uprooting the dynastic syste

• 07:02

### Intuition For Area With Fractional Side Lengths

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Intuition for area with fractional side lengths

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### Informal Argument For The Area Of Circle Formula

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### Laplace Transform to solve an equation

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Using the Laplace Transform to solve an equation we already knew how to solve. More free lessons at: http://www.khanacademy.org/video?v=3uYb-RhM7lU

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Steps to Solve Quadradic Equations. Part of the series: Equations. Quadtratic equations can be easily solved by following a straightforward, step-by-step process. Learn the steps to solve quadratic equations with help from a mathematics tutor and educator

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• 04:20

### Visually Converting From Tenths To Hundredths | 4th Grade | Khan Academy

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Learn how to convert fractions from tenths to hundredths using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/equivale

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Four Steps to Solve a Absolute Value Equation. Part of the series: Help With Equations. Solving a absolute value equation requires you to complete four distinct steps. Learn the four steps to solve an absolute value equation with help from an experienced

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320 views / 0 likes - added

Proof of the formula relating the area of a triangle to its circumradius More free lessons at: http://www.khanacademy.org/video?v=x_aax6LSRtE

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### Total Consumer Surplus as Area

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Looking at consumer surplus as area between the demand curve and the market price More free lessons at: http://www.khanacademy.org/video?v=RBUBIRtn0xQ

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Chinese scientists are planning to launch an “illumination satellite” into orbit in 2020, but will it work? Get 20% off http://www.domain.com domain names and web hosting when you use coupon code SEEKER at checkout! More Crazy Science! - https://www.youtu

• 05:38

### Algebra word problem - System of Equations

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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

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### 10 Magic Tricks in China | 魔术在中国

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Amazing Magic Tricks in China! Magic Shop ► http://www.EvanEraTV.com ► Subscribe - http://bit.ly/SubToEvan Magic Tricks in Beijing, China! In this special Around The World edition of How To Magic, Evan and the crew travel to the Great Wall of China and on

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### Find the Grandmas! Little Red Riding Hood Story with Ms. Booksy | Find It Game | Cartoons for Kids

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Can you count how many grandmas the Big Bad Wolf ate in this Little Red Riding Hood story?

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### 3D Shapes Song For Kids: 3-Dimensional Shapes for Kindergarten, 1st Grade, and 2nd Grade

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### Why Distance is Area under Velocity-Time Line

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Understanding why distance is area under velocity-time line More free lessons at: http://www.khanacademy.org/video?v=d-_eqgj5-K8

• 17:15

### The Generation That's Remaking China - Yang Lan

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Yang Lan, a journalist and entrepreneur who's been called "the Oprah of China," offers insight into the next generation of young Chinese citizens -- urban, connected (via microblogs) and alert to injustice. Talk by Yang Lan.

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### Russia, China, United States race to deploy blazingly fast hypersonic weapons

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In August 2018, high in the sky over northeastern China, the Xingkong-2 hypersonic cruise missile raced at Mach 6, or six times the speed of sound, bobbing and weaving through the atmosphere. This byproduct of the rapidly developing field of hypersonic we

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When going to the movies, is the price you pay proportional to the number of tickets you buy? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-re

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### Comparing Fractions Visually With A Bar | Fractions | 4th Grade | Khan Academy

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### The Grand Tour: China's Road Network

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Jeremy Clarkson, Richard Hammond, and James May are in China exploring the 84,000 miles of motorway, more than any other country in the world including a bridge that is 34 miles long. In Britain, let's face it, we're doomed. Watch The Grand Tour only on P

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### Bay Area CBS Station with Salman Khan

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Bay Area CBS Station with Salman Khan Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

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### Equivalent Fractions And Different Wholes | Fractions | 4th Grade | Khan Academy

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Learn how two fractions are equivalent only if they refer to the same whole. For example, 1/2 of a small circle is not the same as 1/2 of a big circle. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-

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### Sesame Street: Welcome to First Grade!

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Congratulations! You made it to first grade! It's going to be so much fun! You're going to make so many new friends and meet so many new people! Want to hear about the people you'll meet in first grade? Listen to this song! Subscribe to the Sesame Street

• 05:07

### Jessi Has a Problem!

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### China: West Meets East at The Metropolitan Museum of Art

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The Metropolitan Museum of Art in New York City is home to the finest collection of Chinese masterpieces of any museum outside of China. Produced for Public Television by Great Museums TV. For more information, visit http://greatmuseums.org.

• 21:38

### Linear Algebra: Determinant and area of a parallelogram

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Realizing that the determinant of a 2x2 matrix is equal to the area of the parallelogram defined by the column vectors of the matrix More free lessons at: http://www.khanacademy.org/video?v=n-S63_goDFg

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### 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

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### Drawing the 4th, 5th, 6th, and 7th dimension

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How to draw 4, 5, 6, and 7 dimensional objects.

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### Introduction To Area And Unit Squares | Measurement | Pre-Algebra | Khan Academy

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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

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328 views / 0 likes - added

Learn how to compare decimals using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimals-visually/e/comparing-decimals-visually?utm_source=

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### Comparing Values With Calculator | Numbers And Operations | 8th Grade | Khan Academy

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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

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WIRED's Robbie Gonzalez learned to solve a Rubik's cube from Tyson Mao, one of the co-founders of the World Cube Association. In two weeks, Robbie got his solve time down from 45 minutes with Tyson, to 20 minutes on his own, to under a minute on average.

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### Approximating With Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

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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-

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### Top 10 Puzzles Only The Smartest 2% Can Solve

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These amazing top 10 puzzles are the best way to challenge and grow your mind to become smarter than you are. There are also few riddles and some tricky brain teasers which only 2% of the people were able to solve. So, it's a great chance to see if you ar

• 01:32

### How to Solve for the Height of Cylinders

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How to Solve for the Height of Cylinders. Part of the series: Algebra Tips. Solving for the height of cylinders can be accomplished in just a few moments with the right equation. Learn how to solve for the height of cylinders with help from an experienced

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### Interpreting Two-way Tables | Data And Modeling | 8th Grade | Khan Academy

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### Ancient Earthquake And Flood May Have Led To China's Earliest Empire

394 views / 1 likes - added

One of the largest floods in human history might have started a civilization. It begins with an earthquake 4,000 years ago in what is now China. Learn more: http://scim.ag/2aW7D9W Read the research (free): http://scim.ag/2aoxvWt JOIN AAAS: http://scim.ag/

• 02:41

### Multiplying Multiples Of Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

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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

• 06:55

### Place Value For Decimals Greater Than One (examples) | 4th Grade | Khan Academy

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Understand decimal numbers that are greater than 1. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-greater-than-one/e/decimals-greater-than-one-intuition?ut

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### China: West Meets East at The Metropolitan Museum of Art - A Webisode

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A preview of the Great Museums episode titled "China: West Meets East at the Metropolitan Museum of Art". A public television tribute to the 2008 Beijing Olympics, we learn in this clip what distinguishes Chinese art from Western art. Click on http://grea

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### Comparing Numbers Represented In Different Ways | 4th Grade | Khan Academy

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Examples of Khan Academy practice problems where you compare decimals, fractions, and number diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimal

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### 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

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From Transformers to The Martian, Hollywood films are looking to China's massive audiences. Subscribe to our channel! http://goo.gl/0bsAjO Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in th

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### Decimal Intuition With Grids (examples) | Decimals | 4th Grade | Khan Academy

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• 04:37

311 views / 0 likes - added

Understand the connection between decimals and fractions using a grid diagram. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimal-fractions/e/fraction-decimal-in

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This never ending square root can actually be solve using basic alegra. Find the exact value of this never square root. This problem is much easier than it looks. My name is Chris and my passion is to teach math. Learning should never be a struggle which

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Learn how to decompose a fraction with hundredths on a number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fraction

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### Why Do India And China Have So Many People?

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A square is inside of a right triangle. The length of each side of the triangle is 3-4-5. Given this information what are the dimensions of the square? Can you solve this right triangle? My name is Chris and my passion is to teach math. Learning should ne

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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

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How to Solve Sine & Cosine Equations. Part of the series: Equations. Sine and cosine equations need to be solved in a very specific way. Learn how to solve sine and cosine equations with help from an experienced math tutor in this free video clip. Read mo

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View full lesson: http://ed.ted.com/lessons/can-you-solve-the-airplane-riddle-judd-a-schorr Professor Fukanō, the famous scientist, has embarked on a new challenge – piloting around the world in a plane of his own design. There’s just one problem: there's

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View full lesson: http://ed.ted.com/lessons/can-you-solve-the-control-room-riddle-dennis-shasha As your country's top spy, you must infiltrate the headquarters of the evil syndicate, find the secret control panel, and deactivate their death ray. But your

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### They hate "new car" smell in China

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Chinese car buyers are not into new car smell. In fact, they hate it. China is the biggest market for cars in the world, and foreign companies like Ford need to attract Chinese consumers. So they're doing their best to the reduce new car smell in their ca

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A lot of people think school in Japan is tough and there's a lot of homework. Here's a quick video showing what homework can be found in the backpack of a third grade elementary school student in Tokyo. There's Kanji, reading, math, and even cleaning shoe

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A rural resident in China is 30 percent more likely to die after a cancer diagnosis than an urban resident. Three rural families trying to beat these odds — “cancer refugees” — share their stories of battling the disease far from home and the financial ru

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I bought a new property to shoot primitive technology videos on. The new area is dense tropical rainforest with a permanent creek. Starting completely from scratch, my first project was to build a simple dome hut and make a fire. First, I took some wood,

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Wang Runxi is taking on one of the most challenging bike routes in China. He's 12 years old, fresh out of elementary school, and doing the ride in the name of father-son bonding. It's part of his dad's parenting philosophy: Intense sports help build chara

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Affectionately known as China Chili City, Xiazi is home to the nation’s largest chili market. There, hundreds of workers pick, cut and sort chilies before the peppery delights are exported around the world. Meet the people keeping Guizhou Province spicy.

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

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### Handcrafting Giant Lanterns in China

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The courtyard behind Bai Junpings workshop is packed with lanterns, rows and rows of red and gold lanterns. Its a traditional occupation in the village of Tuntou, China, dating back to ancient times. Bai makes tens of thousands of lanterns every year. Som

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319 views / 1 likes - added

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### Only People With An IQ Of 141 Can Solve These Number Puzzles

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735 views / 2 likes - added

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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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Learn how to decompose a fraction into tenths and hundredths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fractions-with

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### A Different Way to Solve Quadratic Equations

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Here at Expii, we love thinking about new ways to solve any problem, and this is our newest adventure: solving quadratic equations differently. This method takes out the guesswork, is simple, and is easier to understand than what is typically written in t

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### Can You Solve

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View full lesson: http://ed.ted.com/lessons/can-you-solve-einstein-s-riddle-dan-van-der-vieren View all the clues here: http://ed.ted.com/lessons/can-you-solve-einstein-s-riddle-dan-van-der-vieren#digdeeper Before he turned physics upside down, a young Al

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### Can you solve the dark coin riddle? - Lisa Winer

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Practice more problem-solving at https://brilliant.org/TedEd/ Solution to the bonus riddle mentioned at the end: https://brilliant.org/tededcoinflip You heard the travelers’ tales, you followed the maps, and now, you’ve finally located the dungeon contain

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### 99.9% OF PEOPLE CAN`T READ THIS RIGHT (If You Solve 13/15 Mind Tricks You Are a Genius!)

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Only a genius can solve this mind test in 20s! Only the cool stuff, try to find the letter N and many more to test your intelligence. If you solve 10 out of 15 you are smarter than 80% of people, if you find 13 or more you might be smarter than Einstein!

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• 02:59

### Jumping the Great Wall of China | Ben 10 | Cartoon Network

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Ben, Gwen, and Grandpa Max take a trek to the Great Wall of China where they run into daredevils LaGrange and Vin Ethanol trying to jump the international monument!Episode: La Grange MurailleSUBSCRIBE: http://cartn.co/subscribeABOUT BEN 10:Ben 10 introduc

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### Solve This Tricky Brain Teasers If You Are A Genius !!

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Solve This Tricky Brain Teasers If You Are A Genius !! IMPOSSIBLE EINSTEIN RIDDLES TO SOLVE - Only 2% Pass!! https://www.youtube.com/watch?v=yhUsXzvU3aQ IMPOSSIBLE HIDDEN OBJECTS TO TEST YOUR BRAIN!! : https://www.youtube.com/watch?v=y4YqtleJqSg EPIC CRIM

• 11:42 Popular

### How to Solve a 3x3 Rubik's Cube In No Time | The Easiest Tutorial

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If you look up the word frustration in the dictionary, youll probably see a picture of a Rubiks Cube. It takes some bright minds only 5 seconds to solve, yet others spend years trying to put it together, eventually giving up. But the truth is that anyone

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### 2003 AIME II Problem 6

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

• 04:25

### Can You Solve this Vampire Riddle? | NUMBER CRUSHERS

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Can You Solve this Vampire Riddle? See if you have the smarts to solve this blood-sucking riddle! Will Jon wake up before the Zombie strikes? Will Gary sink into quicksand before his friend can save him? Take a guess or do the math to know what happens on

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