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02:17
[Yule Log Audio] Sleigh Ride - Pentatonix

656 views / 0 likes - added 9 years ago

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03:29
[Yule Log Audio] Winter Wonderland / Don't Worry Be Happy - Pentatonix ft Tori Kelly

687 views / 1 likes - added 9 years ago

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03:03
[Yule Log Audio] That's Christmas to Me - Pentatonix

585 views / 0 likes - added 9 years ago

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03:24 Popular
[Yule Log Audio] Mary, Did you Know? - Pentatonix

748 views / 2 likes - added 9 years ago

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02:08
[Yule Log Audio] Dance of the Sugar Plum Fairy - Pentatonix

574 views / 0 likes - added 9 years ago

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03:06
[Yule Log Audio] It's the Most Wonderful Time of the Year - Pentatonix

679 views / 0 likes - added 9 years ago

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02:43
[Yule Log Audio] Santa Claus is Coming to Town - Pentatonix

691 views / 1 likes - added 9 years ago

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03:14 Popular
[Yule Log Audio] Silent Night - Pentatonix

725 views / 0 likes - added 9 years ago

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03:27
[Yule Log Audio] Let it Go - Pentatonix

606 views / 0 likes - added 9 years ago

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03:04
Pentatonix Holiday Video Guide

601 views / 0 likes - added 9 years ago

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04:24 Popular
[Yule Log Audio] This Christmas - Pentatonix

780 views / 1 likes - added 9 years ago

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03:42 Popular
[Yule Log Audio] Angels We Have Heard on High - Pentatonix

1,381 views / 2 likes - added 9 years ago

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03:14 Popular
[Yule Log Audio] Carol of the Bells - Pentatonix

867 views / 0 likes - added 9 years ago

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03:04
[Yule Log Audio] Go Tell It On the Mountain - Pentatonix

569 views / 0 likes - added 9 years ago

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04:12 Popular
[Yule Log Audio] Little Drummer Boy - Pentatonix

713 views / 4 likes - added 9 years ago

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03:36
[Yule Log Audio] O Come, O Come Emmanuel - Pentatonix

586 views / 1 likes - added 9 years ago

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02:26 Popular
[Yule Log Audio] O Holy Night - Pentatonix

722 views / 0 likes - added 9 years ago

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03:44
[Yule Log Audio] The Christmas Song (Chestnuts Roasting on an Open Fire) - Pentatonix

577 views / 0 likes - added 9 years ago

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00:58
SUMMER TOUR ANNOUNCEMENT - WE’RE GOING ON THE ROAD WITH KELLY CLARKSON!!!

630 views / 0 likes - added 9 years ago

For all the tour pre-sale details, visit KellyClarkson.com NOW and check to see if we’re is coming to a city near you. See our upcoming On My Way Home World Tour dates below or head to PTXofficial.com. Can’t wait to see you!! _____________________________
07:18
Baseball Hall of Fame 6 of 10: Game of Change

646 views / 1 likes - added 9 years ago

The sixth installment of 10 webisodes featuring The National Baseball Hall of Fame, produced by Great Museums TV using footage from the shoot for the original GREAT MUSEUMS episode which aired on national public television. Each webisode explores a unique
26:40 Popular
Picture Perfect: George Eastman House

726 views / 3 likes - added 9 years ago

Located on historic East Avenue in Rochester, New York, this special showcases the 12.5-acre museum site that was the urban estate of George Eastman, founder of Eastman Kodak Company. The Museum focuses on the 150-year history of the art, technology, and
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01:01 Popular
Sesame Street: Global Thingy -- Ladybug Down

836 views / 0 likes - added 9 years ago

The thingies have a race, but when the Ladybug falls down they all stop to help. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For more fun games and videos for your preschooler in a safe, ch
05:16 Popular
Sesame Street: The Spy Who Loved Cookies (007 Parody)

1,316 views / 4 likes - added 9 years ago

Only the best secret agent could stop Lady Finger's evil plan. Unfortunately, he wasn't available. Can Cookie Monster stop Lady Finger before its too late? Will he listen to directions? Watch carefully. An all new segment on Sesame Street, "Cookie's Crumb
02:16 Popular
Sesame Street: The Count Counts to Zero

844 views / 0 likes - added 9 years ago

Can The Count count to zero? If there's zero there is nothing to count. Oscar the Grouch may have finally got the Count to stop counting! Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For mor
02:34 Popular
Sesame Street: Benjamin Bratt and Elmo translate for a Tiger

779 views / 0 likes - added 9 years ago

Translate means to change one language to another language. Luckily Benjamin Bratt is fluent in English, Spanish, and Tiger so he could plead with Mr. Tiger to not eat Mr. Cheese. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscri
03:50 Popular
Sesame Street: Murray Goes to Gardening School

1,974 views / 0 likes - added 9 years ago

Imagine a school entirely devoted to flowers! Murray and Ovejita just so hapen to be visiting that school today. Learn to plant seeds with Murray, and don't forget to stop and smell the roses. Subscribe to the Sesame Street Channel here: http://www.youtub
06:28 Popular
Sesame Street: Soggy (Word on the Street Podcast)

810 views / 0 likes - added 9 years ago

What's it mean to be soggy? Do you like soggy bread or soggy cereal? Probably not! Soggy is when something is mushy and wet. Your cereal gets soggy when you take too much time to eat it so stop reading this and eat your cereal while you watch this video!
05:42 Popular
Sesame Street: Translate (Word on the Street Podcast)

864 views / 0 likes - added 9 years ago

Have you ever tried having a conversation with a Spanish-speaking lion? It can be hard to understand what he's saying and so in those instances that you find yourself with a Spanish-speaking lion you might ask politely that he translate his words into Eng
02:24
Sesame Street: Strenuous with Wendi and Elmo

625 views / 1 likes - added 9 years ago

Wendi McLendon-Covey and Elmo are tough. They ran around, lifted a heavy rock, and played tug-of-war with one of the world's strongest animals. What makes something strenuous? Wendi and Elmo can tell you - activities that require a ton of energy and hard
01:18 Popular
Sesame Street: Stop and Think Song

904 views / 0 likes - added 9 years ago

Chris and his little Penguin friend know that it's important stop and think before you act. It's just a great little tip to remember when you're going about your day. Say you see some blocks you really want to play with- Stop! and Think! Is there someone
01:27 Popular
Sesame Street: Ernie Change The Plan Song

890 views / 0 likes - added 9 years ago

You might have had your hopes up that your mommy packed you a meatball hero with an ice cream sandwich on the side for lunch, but don't get upset if it turns out to be a PB&J with some carrots. You've got to change the plan, and be flexible. It's respecta
03:30
Sesame Street: Ian McKellen Teaches Cookie Monster to Resist

607 views / 2 likes - added 9 years ago

You shall not pass! Please resist! The word resist means to control yourself and to stop yourself from doing something you really want to do. That's not a word that Cookie Monster understands. Ian McKellen demonstrates. Subscribe to the Sesame Street Chan
03:38 Popular
Sesame Street: Spring Is Here

735 views / 2 likes - added 9 years ago

Spring is finally here and everyone on Sesame Street is so happy that they can't stop singing. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet You can catch Sesame Street in the morning and the
12:49 Popular
Decolonization and Nationalism Triumphant: Crash Course World History #40

911 views / 2 likes - added 9 years ago

READ THIS: THERE ARE TWO MORE VIDEOS IN THE WORLD HISTORY SERIES. You should also turn on the captions. You'll like them. In which John Green teaches you about the post-World War II breakup of most of the European empires. As you'll remember from previous
12:16 Popular
USA vs USSR Fight! The Cold War: Crash Course World History #39

1,195 views / 1 likes - added 9 years ago

In which John Green teaches you about the Cold War, which was occasionally hot, but on average, it was just cool. In the sense of its temperature. It was by no means cool, man. After World War II, there were basically two big geopolitical powers left to d
13:13 Popular
World War II: Crash Course World History #38

1,570 views / 4 likes - added 9 years ago

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
11:55 Popular
The French Revolution: Crash Course World History #29

1,435 views / 3 likes - added 9 years ago

In which John Green examines the French Revolution, and gets into how and why it differed from the American Revolution. Was it the serial authoritarian regimes? The guillotine? The Reign of Terror? All of this and more contributed to the French Revolution
11:11 Popular
The Agricultural Revolution: Crash Course World History #1

850 views / 0 likes - added 9 years ago

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
10:26 Popular
Ecology - Rules for Living on Earth: Crash Course Biology #40

2,269 views / 0 likes - added 9 years ago

Hank introduces us to ecology - the study of the rules of engagement for all of us earthlings - which seeks to explain why the world looks and acts the way it does. The world is crammed with things, both animate and not, that have been interacting with ea
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12:52 Popular
Big Guns: The Muscular System - CrashCourse Biology #31

1,782 views / 1 likes - added 9 years ago

Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax. Crash Course Biology is now available on DVD! http://dft.ba/-8bCC Like CrashCourse: http://www.facebook.com/YouTubeCrashCourse Follow CrashCo
13:26 Popular
ATP&Respiration: Crash Course Biology #7

858 views / 0 likes - added 9 years ago

In which Hank does some push ups for science and describes the "economy" of cellular respiration and the various processes whereby our bodies create energy in the form of ATP. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/Cras
10:28 Popular
Plant Cells: Crash Course Biology #6

1,497 views / 1 likes - added 9 years ago

Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to&different from animal cells. Crash Course Biology now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-S
14:09 Popular
Biological Molecules - You Are What You Eat: Crash Course Biology #3

1,543 views / 0 likes - added 9 years ago

Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCou
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10:19
If One Finger Brought Oil - Things Fall Apart part I: Crash Course Literature 208

693 views / 0 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th
13:24
Ford, Carter, and the Economic Malaise: Crash Course US History #42

669 views / 0 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th
15:15 Popular
The 1960s in America: Crash Course US History #40

925 views / 0 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th
12:45 Popular
Growth, Cities, and Immigration: Crash Course US History #25

1,256 views / 2 likes - added 9 years ago

In which John Green teaches you about the massive immigration to the United States during the late 19th and early 20th century. Immigrants flocked to the US from all over the world in this time period. Millions of Europeans moved to the US where they drov
14:47 Popular
19th Century Reforms: Crash Course US History #15

957 views / 1 likes - added 9 years ago

In which John Green teaches you about various reform movements in the 19th century United States. From Utopian societies to the Second Great Awakening to the Abolition movement, American society was undergoing great changes in the first half of the 19th c
14:11 Popular
The Market Revolution: Crash Course US History #12

788 views / 0 likes - added 9 years ago

In which John Green teaches you about the Market Revolution. In the first half of the 19th century, the way people lived and worked in the United States changed drastically. At play was the classic (if anything in a 30 year old nation can be called classi
11:18 Popular
Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry #39

1,742 views / 1 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.
09:58 Popular
Nuclear Chemistry: Crash Course Chemistry #38

764 views / 0 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.
09:57
Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32

641 views / 0 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.
09:46 Popular
Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22

961 views / 0 likes - added 9 years ago

Atoms are a lot like us - we call their relationships "bonds," and there are many different types. Each kind of atomic relationship requires a different type of energy, but they all do best when they settle into the lowest stress situation possible. The n
13:41 Popular
Entropy: Embrace the Chaos! Crash Course Chemistry #20

787 views / 0 likes - added 9 years ago

Life is chaos and the universe tends toward disorder. But why? If you think about it, there are only a few ways for things to be arranged in an organized manner, but there are nearly infinite other ways for those same things to be arranged. Simple rules o
11:24 Popular
Enthalpy: Crash Course Chemistry #18

1,140 views / 0 likes - added 9 years ago

Energy is like the bestest best friend ever and yet, most of the time we take it for granted. Hank feels bad for our friend and wants us to learn more about it so that we can understand what it's trying to tell us - like that any bond between two atoms co
09:26
Energy&Chemistry: Crash Course Chemistry #17

653 views / 0 likes - added 9 years ago

Grumpy Professor Hank admits to being wrong about how everything is chemicals. But he now wants you to listen as he blows your mind with a new sweeping statement: everything (yes, really everything this time) is energy. What?! This week, Hank takes us on
11:13 Popular
Redox Reactions: Crash Course Chemistry #10

1,135 views / 0 likes - added 9 years ago

All the magic that we know is in the transfer of electrons. Reduction (gaining electrons) and oxidation (the loss of electrons) combine to form Redox chemistry, which contains the majority of chemical reactions. As electrons jump from atom to atom, they c
10:12 Popular
The Nucleus: Crash Course Chemistry #1

924 views / 1 likes - added 9 years ago

Hank does his best to convince us that chemistry is not torture, but is instead the amazing and beautiful science of stuff. Chemistry can tell us how three tiny particles - the proton, neutron and electron - come together in trillions of combinations to f
09:34 Popular
Consciousness - Crash Course Psychology #8

1,111 views / 0 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.
13:33 Popular
Japan in the Heian Period and Cultural History: Crash Course World History 227

1,328 views / 7 likes - added 9 years ago

In which John Green teaches you about what westerners call the middle ages and the lives of the aristocracy...in Japan. The Heian period in Japan lasted from 794CE to 1185CE, and it was an interesting time in Japan. Rather than being known for a thriving
15:07 Popular
Luther and the Protestant Reformation: Crash Course World History #218

1,009 views / 4 likes - added 9 years ago

In which John Green teaches you about the Protestant Reformation. Prior to the Protestant Reformation, pretty much everyone in Europe was a Roman Catholic. Not to get all great man, but Martin Luther changed all that. Martin Luther didn't like the corrupt
12:51 Popular
Population, Sustainability, and Malthus: Crash Course World History 215

1,146 views / 0 likes - added 9 years ago

In which John Green teaches you about population. So, how many people can reasonably live on the Earth? Thomas Malthus got it totally wrong in the 19th century, but for some reason, he keeps coming up when we talk about population. In 1800, the human popu
07:21 Popular
Humans and Energy: Crash Course World History 207

1,108 views / 1 likes - added 9 years ago

In which Stan Muller subs for John Green and teaches you about energy and humanity. Today we discuss the ideas put forth by Alfred Crosby in his book, Children of the Sun. Historically, almost all of the energy that humans use has been directly or indirec
10:08 Popular
Climate Change, Chaos, and The Little Ice Age - Crash Course World History 206

1,161 views / 2 likes - added 9 years ago

In which John Green teaches you about the Little Ice Age. The Little Ice Age was a period of global cooling that occurred from the 13th to the 19th centuries. This cooling was likely caused by a number of factors, including unusual solar activity and volc
13:58 Popular
The Modern Revolution: Crash Course Big History #8

823 views / 0 likes - added 9 years ago

In which Hank and John Green teach you a Crash Course on the modern revolution, and the upside of the progress that humanity has made in the last 500 years or so. And while there are two sides to every history, and many of these changes haven't been great
11:44 Popular
The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9

1,156 views / 0 likes - added 9 years ago

•••SUBBABLE MESSAGE••• TO: Carla FROM: Christopher Next stop is whenever. Just be like, "stop." *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if
07:01 Popular
How a Bill Becomes a Law: Crash Course Government and Politics #9

794 views / 1 likes - added 9 years ago

Oh my, Craig has his work cut out for him this week. The process of how a bill becomes a law can be pretty complex, fraught with potential bill-death at every corner. As if just getting through committee isn’t difficult enough, bills have to navigate a se
08:56 Popular
Voltage

712 views / 0 likes - added 9 years ago

Difference between electrical potential (voltage) and electrical potential energy More free lessons at: http://www.khanacademy.org/video?v=zqGvUbvVQXg
09:51
Electric Potential Energy (part 2-- involves calculus)

636 views / 0 likes - added 9 years ago

Electric potential energy difference in a varying field More free lessons at: http://www.khanacademy.org/video?v=CqsYCIjSm9A
12:37
Electric Potential Energy

611 views / 0 likes - added 9 years ago

Introduction to electric potential More free lessons at: http://www.khanacademy.org/video?v=elJUghWSVh4
09:50
Thermodynamics (part 1)

554 views / 0 likes - added 9 years ago

Intuition of how gases generate pressure in a container and why pressure x volume is proportional to the combined kinetic energy of the molecules in the volume. More free lessons at: http://www.khanacademy.org/video?v=tQcB9BLUoVI
09:39
Spring potential energy example (mistake in math)

487 views / 0 likes - added 9 years ago

A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!) More free lessons at: http://www.khanacademy.org/video?v=P3QV9ktuYlQ
10:00
Potential energy stored in a spring

541 views / 0 likes - added 9 years ago

Work needed to compress a spring is the same thing as the potential energy stored in the compressed spring. More free lessons at: http://www.khanacademy.org/video?v=eVl5zs6Lqy0
10:05
Work/Energy problem with Friction

643 views / 0 likes - added 9 years ago

A conservation of energy problem where all of the energy is not conserved. More free lessons at: http://www.khanacademy.org/video?v=YvacYWgygaA
10:07 Popular
Conservation of Energy

704 views / 0 likes - added 9 years ago

Using the law of conservation of energy to see how potential energy is converted into kinetic energy More free lessons at: http://www.khanacademy.org/video?v=kw_4Loo1HR4
09:52
Work and Energy (part 2)

625 views / 1 likes - added 9 years ago

More on work. Introduction to Kinetic and Potential Energies. More free lessons at: http://www.khanacademy.org/video?v=3mier94pbnU
09:18
Introduction to work and energy

694 views / 0 likes - added 9 years ago

Introduction to work and energy More free lessons at: http://www.khanacademy.org/video?v=2WS1sG9fhOk
16:18
Plotting Projectile Displacement, Acceleration, and Velocity

508 views / 0 likes - added 9 years ago

Plotting projectile displacement, acceleration, and velocity as a function to change in time More free lessons at: http://www.khanacademy.org/video?v=T0zpF_j7Mvo
04:49
Race Cars with Constant Speed Around Curve

655 views / 0 likes - added 9 years ago

When acceleration could involve a change in direction and not speed More free lessons at: http://www.khanacademy.org/video?v=ITA1rW5UraU
27:04 Popular
Lin Alg: Example using orthogonal change-of-basis matrix to find transformation matrix

727 views / 0 likes - added 9 years ago

Example using orthogonal change-of-basis matrix to find transformation matrix More free lessons at: http://www.khanacademy.org/video?v=gfVY7cW7VLQ
13:34
Lin Alg: Invertible Change of Basis Matrix

660 views / 0 likes - added 9 years ago

Using an invertible change of basis matrix to go between different coordinate systems More free lessons at: http://www.khanacademy.org/video?v=meibWcbGqt4
17:55 Popular
Linear Algebra: Change of Basis Matrix

731 views / 0 likes - added 9 years ago

Using a change of basis matrix to get us from one coordinate system to another. More free lessons at: http://www.khanacademy.org/video?v=1j5WnqwMdCk
14:10
Linear Algebra: Determinant of Transpose

699 views / 0 likes - added 9 years ago

Proof by induction that transposing a matrix does not change its determinant More free lessons at: http://www.khanacademy.org/video?v=x-GV2v0dRNE
07:38
Change of State Example

565 views / 0 likes - added 9 years ago

Specific Heat Capacity and Enthalpy of Vaporization example More free lessons at: http://www.khanacademy.org/video?v=tvO0358YUYM
06:41
A look at a seductive but wrong Gibbs/Spontaneity Proof

525 views / 0 likes - added 9 years ago

A look at why the "proof" of the relation between changes in Gibbs Free Energy and Spontaneity is wrong in many textbooks. More free lessons at: http://www.khanacademy.org/video?v=yYbzJs6vgv8
13:56
More rigorous Gibbs Free Energy/ Spontaneity Relationship

523 views / 0 likes - added 9 years ago

More formal understanding of why a negative change in Gibbs Free Energy implies a spontaneous, irreversible reaction. More free lessons at: http://www.khanacademy.org/video?v=7aur5h44pV4
09:57
Gibbs Free Energy Example

585 views / 0 likes - added 9 years ago

Determining if a reaction is spontaneous by calculating the change in Gibbs Free Energy. More free lessons at: http://www.khanacademy.org/video?v=sG1ZAdYi13A
17:40
Gibbs Free Energy and Spontaneity

592 views / 0 likes - added 9 years ago

Intuition behind why spontaneity is driven by enthalpy, entropy and temperature. Introduction to Gibbs free energy. More free lessons at: http://www.khanacademy.org/video?v=ViAmQivKif0
15:40
Hess's Law and Reaction Enthalpy Change

505 views / 0 likes - added 9 years ago

Using Hess's Law and standard heats of formation to determine the enthalpy change for reactions More free lessons at: http://www.khanacademy.org/video?v=chXMpDwjBDk
12:35
Heat of Formation

536 views / 0 likes - added 9 years ago

Standard heat of formation or standard enthalpy change of formation. More free lessons at: http://www.khanacademy.org/video?v=PK_JXzYcme0
16:56 Popular
Proof: U=(3/2)PV or U=(3/2)nRT

800 views / 0 likes - added 9 years ago

Conceptual proof that the internal energy of an ideal gas system is 3/2 PV. More free lessons at: http://www.khanacademy.org/video?v=qSFY7GKhSRs
13:45
More on Internal Energy

487 views / 0 likes - added 9 years ago

Getting more intuition of internal energy, heat, and work More free lessons at: http://www.khanacademy.org/video?v=aOSlXuDO4UU
17:40
First Law of Thermodynamics/ Internal Energy

555 views / 0 likes - added 9 years ago

First law of thermodynamic and Internal Energy More free lessons at: http://www.khanacademy.org/video?v=Xb05CaG7TsQ
15:27
Introduction to Kinetics

419 views / 0 likes - added 9 years ago

Kinetics, activation energy, activated complex and catalysts. More free lessons at: http://www.khanacademy.org/video?v=__zy-oOLPug
12:13
Periodic Table Trends: Ionization Energy

556 views / 0 likes - added 9 years ago

What an ion is. Using the periodic table to understand how difficult it is to ionize an atom. More free lessons at: http://www.khanacademy.org/video?v=ywqg9PorTAw
08:05
Identifying Quadratic Models

522 views / 0 likes - added 9 years ago

Using y=x^2 to give a sense of why the change in the change of y (or the change in the slope) is constant
13:42
Slope and Rate of Change

533 views / 0 likes - added 9 years ago

More free lessons at: http://www.khanacademy.org/video?v=Iqws-qzyZwc
13:41
Energy Inputs for Tilling a Hectare of Land

558 views / 0 likes - added 9 years ago

Thinking about energy consumption for tilling land More free lessons at: http://www.khanacademy.org/video?v=5I9dH5im24U
12:57
Milankovitch Cycles Precession and Obliquity

519 views / 0 likes - added 9 years ago

How changes in Earth's rotation can effect Earth's seasons and climate More free lessons at: http://www.khanacademy.org/video?v=ZD8THEz18gc
08:58
Projectile motion (part 4)

449 views / 0 likes - added 9 years ago

Solving for time when you are given the change in distance, acceleration, and initial velocity More free lessons at: http://www.khanacademy.org/video?v=-W3RkgvLrGI
09:05
Projectile motion (part 3)

504 views / 0 likes - added 9 years ago

An example of solving for the final velocity when you know the change in distance, time, initial velocity, and acceleration More free lessons at: http://www.khanacademy.org/video?v=Y5cSGxdDHz4
06:38
Firestick Farming

653 views / 0 likes - added 9 years ago

How the indigenous Australians used fire to change their environment More free lessons at: http://www.khanacademy.org/video?v=mwUyaeWxJhA
07:09
Government Spending and the IS-LM model

515 views / 0 likes - added 9 years ago

How a change in fiscal policy shifts the IS curve More free lessons at: http://www.khanacademy.org/video?v=pzQnc_0eZA8
11:45
Details on Shifting Aggregate Planned Expenditures

454 views / 0 likes - added 9 years ago

Showing how a change in government spending can lead to a new equilibrium More free lessons at: http://www.khanacademy.org/video?v=xF_Z4QK0tsA
09:05
Changes in Market Equilibrium

548 views / 0 likes - added 9 years ago

How the equilibrium price or quantity might change due to changes in supply or demand More free lessons at: http://www.khanacademy.org/video?v=NgPqyM3I_8o

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