Search Results: "want"

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09:21
Prisoners' Dilemma and Nash Equilibrium

587 views / 1 likes - added 9 years ago

Why two not-so-loyal criminals would want to snitch each other out More free lessons at: http://www.khanacademy.org/video?v=UkXI-zPcDIM
11:06
Bailout 9: Paulson's Plan

584 views / 0 likes - added 9 years ago

What Paulson wants to do and why I don't like it. More free lessons at: http://www.khanacademy.org/video?v=eBYbnYNl0rw
12:36 Popular
Lin Alg: Alternate Basis Tranformation Matrix Example Part 2

918 views / 0 likes - added 9 years ago

Showing that the transformation matrix with respect to basis B actually works. Brief point on why someone would want to operate in a different basis to begin with. More free lessons at: http://www.khanacademy.org/video?v=EyORbCPUAd4
06:47 Popular
Introduction: Crash Course U.S. Government and Politics

799 views / 0 likes - added 9 years ago

In which Craig Benzine introduces a brand new Crash Course about U.S. Government and Politics! This course will provide you with an overview of how the government of the United States is supposed to function, and we'll get into how it actually does functi
09:05
The Bicameral Congress: Crash Course Government and Politics #2

698 views / 0 likes - added 9 years ago

In which Craig Benzine teaches you about the United States Congress, and why it's bicameral, and what bicameral means. Craig tells you what the Senate and House of Representatives are for, some of the history of the institutions, and reveal to you just ho
08:31 Popular
Separation of Powers and Checks and Balances: Crash Course Government and Politics #3

1,685 views / 2 likes - added 9 years ago

In which Craig Benzine teaches you about the US Governments Separation of powers and the system of checks and balances. In theory, the Legislative Branch, the Executive Branch, and the Judicial Brach are designed to keep each other in check, and to keep a
09:15
Federalism: Crash Course Government and Politics #4

689 views / 0 likes - added 9 years ago

In which Craig Benzine teaches you about federalism, or the idea that in the United States, power is divided between the national government and the 50 state governments. Craig will teach you about how federalism has evolved over the history of the US, an
08:57 Popular
Constitutional Compromises: Crash Course Government and Politics #5

787 views / 1 likes - added 9 years ago

In which Craig Benzine teaches you about the compromises met in ratifying the U.S. Constitution. The United State’s didn’t always have its current system of government. Actually, this is it’s second attempt. Craig will delve into the failures (and few suc
08:58
Congressional Elections: Crash Course Government and Politics #6

664 views / 0 likes - added 9 years ago

This week Craig Benzine talks about the importance of elections. But he isn’t going to focus on presidential elections, but instead those of the strongest part of our government: congressional elections. Craig will talk about the frequency of elections in
08:28
Congressional Committees: Crash Course Government and Politics #7

694 views / 0 likes - added 9 years ago

This week Craig Benzine clears up the role of committees in Congress. We’ll talk about standing committees, joint committees, conference committees, and caucuses (and not the candidate-choosing kinds) as well as the staff agencies that help advise these c
08:12
Congressional Leadership: Crash Course Government and Politics #8

643 views / 0 likes - added 9 years ago

This week Craig Benzine explores the leadership structure of congress. We’ll break out the clone machine to examine the responsibilities of the speaker of the house, the majority and minority leaders as well as the majority and minority whips in both the
07:01 Popular
How a Bill Becomes a Law: Crash Course Government and Politics #9

786 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
06:36
Congressional Decisions: Crash Course Government and Politics #10

629 views / 0 likes - added 9 years ago

This week Craig breaks out the crystal ball to try and figure out why our congresspeople do the things that they do. We’ll talk about the three motivating factors of congressional decisions - constituency, interest groups, and political parties - and we’l
06:30 Popular
Presidential Power: Crash Course Government and Politics #11

734 views / 0 likes - added 9 years ago

This week Craig looks at the expressed powers of the President of the United States - that is the ones you can find in the Constitution. From appointing judges and granting pardons, to vetoing laws and acting as the nation’s chief diplomat on foreign poli
12:12 Popular
Introduction to Astronomy: Crash Course Astronomy #1

714 views / 3 likes - added 9 years ago

Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: "What is astronomy?" -- Table of Contents: What is Astronomy? 3:00 Who Studie
11:17
Naked Eye Observations: Crash Course Astronomy #2

664 views / 0 likes - added 9 years ago

Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see with your naked eye. -- Table of Contents: Naked Eye Observations 0:28.4 Constellations 3:09.7 The Color of Stars 2:44.5 View of the
09:29
Cycles in the Sky: Crash Course Astronomy #3

623 views / 0 likes - added 9 years ago

This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe. -- Table of Contents: Naked Eye Observations 0:28.4 Constellations 3:09.7 The Color of Stars 2:44.5 View of
09:46 Popular
Moon Phases: Crash Course Astronomy #4

1,944 views / 6 likes - added 9 years ago

In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases. -- Why the Moon Has Phases 0:36.1 Spheres in Orbit 1:05.4 Name of the Moon Phases 2:25.5 How We See It 7:48.2 -- PBS Digital Studios: http://youtube
10:32 Popular
Eclipses: Crash Course Astronomy #5

830 views / 0 likes - added 9 years ago

The big question in the comments last week was, "BUT WHAT ABOUT ECLIPSES?" Today, Phil breaks 'em down for you. This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse -- As promised, Phil's sun spotting recommendations: Astronome
12:01
Telescopes: Crash Course Astronomy #6

666 views / 0 likes - added 9 years ago

Today Phil explains how telescopes work and offers up some astronomical shopping advice. -- How Telescopes Work 1:07 Refractors vs Reflectors 2:50 Technology and the Light Spectrum 7:45 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow P
10:03 Popular
The Gravity of the Situation: Crash Course Astronomy #7

759 views / 0 likes - added 9 years ago

In today's episode, Phil looks at how gravity plays out across the universe. This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse -- Gravity is a Force 2:17 Different Types of Orbit 3:41 Escape Velocity 5:30 Weightless Mass 7:0
09:47 Popular
Tides: Crash Course Astronomy #8

1,083 views / 1 likes - added 9 years ago

Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked? What would happen if you were 300km tall? Important questions. -- Gravity Over Distance 0:44 Tidal Force Para
10:17 Popular
Introduction to the Solar System: Crash Course Astronomy #9

976 views / 1 likes - added 9 years ago

In today's Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a giant ball of gas to the system of planets and other celestial objects we have today. This episode is sponsored by Squaresp
12:04 Popular
The Sun: Crash Course Astronomy #10

795 views / 2 likes - added 9 years ago

Phil takes us for a closer (eye safe!) look at the two-octillion ton star that rules our solar system. We look at the sun's core, plasma, magnetic fields, sunspots, solar flares, coronal mass ejections, and what all of that means for our planet. This epis
10:14 Popular
The Earth: Crash Course Astronomy #11

877 views / 0 likes - added 9 years ago

Phil starts the planet-by-planet tour of the solar system right here at home, Earth. -- Table of Contents Earth is a Planet 0:03 Layers of Earth 1:25 The Magnetic Field 5:10 Atmosphere and the Human Influence 6:14 -- PBS Digital Studios: http://youtube.co
09:51 Popular
The Moon: Astronomy #12

953 views / 1 likes - added 9 years ago

Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation. This episode is brought to you by Squarespace: http://www.squarespace.com/crashcourse -- Table of Contents Many Millio
11:21 Popular
Introduction to Anatomy&Physiology: Crash Course A&P #1

848 views / 0 likes - added 9 years ago

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10:43 Popular
Tissues, Part 1: Crash Course A&P #2

886 views / 0 likes - added 9 years ago

•••SUBBABLE MESSAGE••• TO: Jordan Schoonover FROM: Mom, Dad&Madison Happy Birthday Jordan! We love you sweetheart!! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything w
10:16 Popular
Tissues, Part 2 - Epithelial Tissue: Crash Course A&P #3

1,538 views / 0 likes - added 9 years ago

•••SUBBABLE MESSAGE••• TO : Phoebe and James McMullan FROM : Dad Continue being awesome Phoebe&James from John&Hank! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything
10:29 Popular
Tissues, Part 3 - Connective Tissues: Crash Course A&P #4

1,134 views / 0 likes - added 9 years ago

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09:43 Popular
Tissues, Part 4 - Types of Connective Tissues: Crash Course A&P #5

1,590 views / 0 likes - added 9 years ago

•••SUBBABLE MESSAGE••• TO: the world. FROM: Laura Love Rathbun Learning is the best thing to do with your you! *** 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
09:40 Popular
The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6

854 views / 0 likes - added 9 years ago

•••SUBBABLE MESSAGE••• TO: Ciaran FROM: your sister Jillian Happy birthday! Hope you enjoy being immortalized via doobly-doo! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with ev
09:57 Popular
The Integumentary System, Part 2 - Skin Deeper: Crash Course A&P #7

750 views / 0 likes - added 9 years ago

•••SUBBABLE MESSAGE••• TO: Helle Søndergaard FROM: Martin Søndergaard Congratulations for finishing first semester on physiotherapy! I'm so proud! *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as
10:36 Popular
The Nervous System, Part 1: Crash Course A&P #8

1,168 views / 1 likes - added 9 years ago

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11:44 Popular
The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9

1,144 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
10:57 Popular
The Nervous System, Part 3 - Synapses!: Crash Course A&P #10

1,413 views / 0 likes - added 9 years ago

•••SUBBABLE MESSAGE••• TO: NerdFighteria FROM: Dave at DTXC.CO Cycling t-shirts at DTXC.CO. Don't give up the Road! DFTBA! *** Subbable Co-Sponsors: Logan Sanders https://www.facebook.com/perrylogans Dr. Boyev http://youtube.com/taichiknees *** You can di
10:08 Popular
Central Nervous System: Crash Course A&P #11

1,186 views / 1 likes - added 9 years ago

Today Hank talks about your central nervous system. In this episode we'll explore how your brain develops and how important location is for each of your brain's many functions. Table of Contents Central Nervous System, Location and Brain Function 1:48 Bra
10:02 Popular
Peripheral Nervous System: Crash Course A&P #12

1,525 views / 2 likes - added 9 years ago

It is now time to meet the system that helps your crazy brain stay in touch with the outside world. We follow up last week's tour of the central nervous system with a look at your peripheral nervous system, its afferent and efferent divisions, how it proc
08:49 Popular
Autonomic Nervous System: Crash Course A&P #13

1,508 views / 1 likes - added 9 years ago

Hank takes you on a tour of your two-part autonomic nervous system. This episode explains how your sympathetic nervous system and parasympathetic nervous system work together as foils, balancing each other out. Their key anatomical differences - where ner
09:10 Popular
HOW World War I Started: Crash Course World History 209

1,492 views / 6 likes - added 9 years ago

In which John Green teaches you about World War I and how it got started. Crash Course doesn't usually talk much about dates, but the way that things unfolded in July and August of 1914 are kind of important to understanding the Great War. You'll learn ab
12:31 Popular
The Railroad Journey and the Industrial Revolution: Crash Course World History 214

737 views / 2 likes - added 9 years ago

In which John Green teaches you about railroads, and some of the ways they changed the world, and how they were a sort of microcosm for the Industrial Revolution as a whole. Prior to the invention of steam powered railroads, pretty much all locomotion had
12:14 Popular
War and Nation Building in Latin America: Crash Course World History 225

882 views / 0 likes - added 9 years ago

In which John Green teaches you about nation building and nationalism in Latin America. Sometimes, the nations of Latin America get compared to the nations of Europe, and are found wanting. This is kind of a silly comparison. The rise of democratic, econo
13:41 Popular
Iran's Revolutions: Crash Course World History 226

750 views / 0 likes - added 9 years ago

In which John Green teaches you about Iran's Revolutions. Yes, revolutions plural. What was the1979 Iranian Revolution about? It turns out, Iran has a pretty long history of unrest in order to put power in the hands of the people, and the most recent revo
10:54 Popular
Intro to Psychology - Crash Course Psychology #1

997 views / 0 likes - added 9 years ago

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10:51 Popular
Psychological Research - Crash Course Psychology #2

805 views / 1 likes - added 9 years ago

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10:14 Popular
The Chemical Mind - Crash Course Psychology #3

934 views / 0 likes - added 9 years ago

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12:34 Popular
Meet Your Master: Getting to Know Your Brain - Crash Course Psychology #4

911 views / 0 likes - added 9 years ago

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10:46 Popular
Sensation&Perception - Crash Course Psychology #5

739 views / 0 likes - added 9 years ago

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10:24 Popular
Homunculus - Crash Course Psychology #6

714 views / 0 likes - added 9 years ago

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10:00
Perceiving is Believing - Crash Course Psychology #7

674 views / 0 likes - added 9 years ago

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09:34 Popular
Consciousness - Crash Course Psychology #8

1,093 views / 0 likes - added 9 years ago

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10:41 Popular
To Sleep, Perchance to Dream - Crash Course Psychology #9

1,309 views / 0 likes - added 9 years ago

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11:19
Altered States - Crash Course Psychology #10

681 views / 0 likes - added 9 years ago

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11:50 Popular
How to Train a Brain - Crash Course Psychology #11

1,113 views / 0 likes - added 9 years ago

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09:35 Popular
The Bobo Beatdown - Crash Course Psychology #12

838 views / 0 likes - added 9 years ago

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09:55 Popular
How We Make Memories - Crash Course Psychology #13

1,133 views / 0 likes - added 9 years ago

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10:18 Popular
Remembering and Forgetting - Crash Course Psychology #14

937 views / 1 likes - added 9 years ago

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10:42 Popular
Cognition: How Your Mind Can Amaze and Betray You - Crash Course Psychology #15

904 views / 1 likes - added 9 years ago

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10:02 Popular
Language: Crash Course Psychology #16

874 views / 0 likes - added 9 years ago

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11:20 Popular
The Power of Motivation: Crash Course Psychology #17

1,011 views / 0 likes - added 9 years ago

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09:50 Popular
The Growth of Knowledge: Crash Course Psychology #18

1,032 views / 0 likes - added 9 years ago

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11:38 Popular
Monkeys and Morality: Crash Course Psychology #19

840 views / 0 likes - added 9 years ago

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10:15 Popular
Adolescence: Crash Course Psychology #20

1,018 views / 0 likes - added 9 years ago

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12:24 Popular
Rorschach&Freudians: Crash Course Psychology #21

704 views / 0 likes - added 9 years ago

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11:08 Popular
Measuring Personality: Crash Course Psychology #22

1,029 views / 1 likes - added 9 years ago

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12:39 Popular
Controversy of Intelligence: Crash Course Psychology #23

989 views / 0 likes - added 9 years ago

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11:04 Popular
Brains Vs. Bias: Crash Course Psychology #24

708 views / 1 likes - added 9 years ago

***Subbable Message*** To: Everyone! Life is short. Don't forget to be awesome. Please. From: Dr. Dot To: All Living People Prepare - for I am about to take over the world. From: S.J. Black ****** You can directly support Crash Course at http://www.subbab
10:51 Popular
Feeling All the Feels: Crash Course Psychology #25

736 views / 2 likes - added 9 years ago

***Subbable Message*** To Robert, Thank you for showing me the world, darling! From Amy and That's happiness; to be dissolved into something complete and great. From Ty Scaletta ****** You can directly support Crash Course at http://www.subbable.com/crash
10:20 Popular
Emotion, Stress and Health: Crash Course Psychology #26

965 views / 1 likes - added 9 years ago

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10:10 Popular
Psychological Disorders: Crash Course Psychology #28

869 views / 0 likes - added 9 years ago

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11:32 Popular
OCD&Anxiety Disorders: Crash Course Psychology #29

888 views / 0 likes - added 9 years ago

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10:00
Depressive and Bipolar Disorders: Crash Course Psychology #30

682 views / 2 likes - added 9 years ago

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10:51
Trauma&Addiction: Crash Course Psychology #31

651 views / 0 likes - added 9 years ago

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11:44
Schizophrenia&Dissociative Disorders: Crash Course Psychology #32

607 views / 0 likes - added 9 years ago

••• Subbable Message ••• To: Margarete From: Toni Your sister thinks you are the best! Here's hoping Crash Course does an Art History season just for you. :) ••• To get your own message in the dooblydoo, you can directly support Crash Course at http://www
10:12 Popular
Eating and Body Dysmorphic Disorders: Crash Course Psychology #33

738 views / 0 likes - added 9 years ago

Get Help: If you think you have an eating disorder, please contact http://www.nationaleatingdisorders.org/ for help! You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we'r
10:58 Popular
Personality Disorders: Crash Course Psychology #34

873 views / 1 likes - added 9 years ago

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11:23 Popular
Getting Help - Psychotherapy: Crash Course Psychology #35

702 views / 0 likes - added 9 years ago

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11:09
Biomedical Treatments: Crash Course Psychology #36

683 views / 0 likes - added 9 years ago

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10:48 Popular
Social Thinking: Crash Course Psychology #37

705 views / 0 likes - added 9 years ago

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10:08 Popular
Social Influence: Crash Course Psychology #38

763 views / 0 likes - added 9 years ago

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09:54 Popular
Prejudice&Discrimination: Crash Course Psychology #39

762 views / 0 likes - added 9 years ago

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10:41
Aggression V. Altruism: Crash Course Psychology #40

676 views / 0 likes - added 9 years ago

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11:24 Popular
Unit Conversion&Significant Figures: Crash Course Chemistry #2

746 views / 0 likes - added 9 years ago

A unit is the frequently arbitrary designation we have given to something to convey a definite magnitude of a physical quantity and every quantity can be expressed in terms of the seven base units that are contained in the international system of units. H
13:34 Popular
Water and Solutions -- for Dirty Laundry: Crash Course Chemistry #7

1,570 views / 0 likes - added 9 years ago

Dihydrogen monoxide (better know as water) is the key to nearly everything. It falls from the sky, makes up 60% of our bodies, and just about every chemical process related to life takes place with it or in it. Without it, none of the chemical reactions t
11:17 Popular
Acid-Base Reactions in Solution: Crash Course Chemistry #8

1,412 views / 0 likes - added 9 years ago

Last week, Hank talked about how stuff mixes together in solutions. Today, and for the next few weeks, he will talk about the actual reactions happening in those solutions - atoms reorganizing themselves to create whole new substances in the processes tha
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Precipitation Reactions: Crash Course Chemistry #9

661 views / 0 likes - added 9 years ago

A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this episode of Crash Course
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Redox Reactions: Crash Course Chemistry #10

1,123 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
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How To Speak Chemistrian: Crash Course Chemistry #11

643 views / 0 likes - added 9 years ago

Learning to talk about chemistry can be like learning a foreign language, but Hank is here to help with some straightforward and simple rules to help you learn to speak Chemistrian like a native. Table of Contents Determining Formulas and Names of Monatom
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The Ideal Gas Law: Crash Course Chemistry #12

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

Gases are everywhere, and this is good news and bad news for chemists. The good news: when they are behaving themselves, it's extremely easy to describe their behavior theoretically, experimentally and mathematically. The bad news is they almost never beh
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Ideal Gas Problems: Crash Course Chemistry #13

918 views / 0 likes - added 9 years ago

We don't live in a perfect world, and neither do gases - it would be great if their particles always fulfilled the assumptions of the ideal gas law, and we could use PV=nRT to get the right answer every time. Unfortunately, the ideal gas law (like our cul
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Real Gases: Crash Course Chemistry #14

568 views / 0 likes - added 9 years ago

Hank bursts our ideal gas law bubble, er, balloon, and brings us back to reality, explaining how the constants in the gas law aren't all that constant; how the ideal gas law we've spent the past two weeks with has to be corrected for volume because atoms
11:55 Popular
Partial Pressures&Vapor Pressure: Crash Course Chemistry #15

714 views / 0 likes - added 9 years ago

This week we continue to spend quality time with gases, more deeply investigating some principles regarding pressure - including John Dalton's Law of Partial Pressures, vapor pressure - and demonstrating the method for collecting gas over water. Table of
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Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16

1,282 views / 0 likes - added 9 years ago

We have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry (and also in life) how a gas moves is more complex than it at first appears. In this episode, Hank
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Energy&Chemistry: Crash Course Chemistry #17

633 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
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Enthalpy: Crash Course Chemistry #18

1,126 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
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Calorimetry: Crash Course Chemistry #19

726 views / 0 likes - added 9 years ago

Today's episode dives into the HOW of enthalpy. How we calculate it, and how we determine it experimentally...even if our determinations here at Crash Course Chemistry are somewhat shoddy. -- Table of Contents Hess' Law 2:30 Calorimeter 3:12 Calorimetry 3
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Entropy: Embrace the Chaos! Crash Course Chemistry #20

770 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
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Lab Techniques&Safety: Crash Course Chemistry #21

926 views / 0 likes - added 9 years ago

Hank takes a break from the desk to bring you to the lab in order to demonstrate some important points about the practical side of chemistry - experimentation in the laboratory. You'll learn what to wear in the lab, how to dispose of chemicals safely, how
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Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22

943 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
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Polar&Non-Polar Molecules: Crash Course Chemistry #23

1,010 views / 1 likes - added 9 years ago

*** PLEASE WATCH WITH ANNOTATIONS ON! SOME INACCURACIES IN GRAPHICS ARE NOTED AND CORRECTED IN ANNOTATIONS. THANKS! *** Molecules come in infinite varieties, so in order to help the complicated chemical world make a little more sense, we classify and cate
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Bonding Models and Lewis Structures: Crash Course Chemistry #24

699 views / 0 likes - added 9 years ago

Models are great, except they're also usually inaccurate. In this episode of Crash Course Chemistry, Hank discusses why we need models in the world and how we can learn from them... even when they're almost completely wrong. Plus, Lewis Structures! -- Tab
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Orbitals: Crash Course Chemistry #25

882 views / 0 likes - added 9 years ago

In this episode of Crash Course Chemistry, Hank discusses what Molecules actually look like and why, some quantum-mechanical three dimensional wave functions are explored, he touches on hybridization, and delves into sigma and pi bonds. -- Table of Conten
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Liquids: Crash Course Chemistry #26

741 views / 1 likes - added 9 years ago

In this episode of Crash Course Chemistry, Hank gives you the low down on things like London Dispersion Forces, Hydrogen Bonds, Cohesion, Adhesion, Viscosity, Capillary Action, Surface Tension, and why liquids are just... WEIRD! -- TABLE OF CONTENTS Londo
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Solutions: Crash Course Chemistry #27

695 views / 0 likes - added 9 years ago

This week, Hank elaborates on why Fugu can kill you by illustrating the ideas of solutions and discussing molarity, molality, and mass percent. Also, why polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes. All that plus
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Equilibrium: Crash Course Chemistry #28

1,174 views / 0 likes - added 9 years ago

In this episode of Crash Course Chemistry, Hank goes over the ideas of keeping your life balance... well, your chemical life. Equilibrium is all about balance and today Hank discusses Chemical Equilibrium, Concentration, Temperature, and Pressure. Also, h
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Equilibrium Equations: Crash Course Chemistry #29

734 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.
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pH and pOH: Crash Course Chemistry #30

907 views / 1 likes - added 9 years ago

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11:41 Popular
Buffers, the Acid Rain Slayer: Crash Course Chemistry #31

1,012 views / 2 likes - added 9 years ago

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09:57
Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32

625 views / 0 likes - added 9 years ago

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Doing Solids: Crash Course Chemistry #33

1,096 views / 0 likes - added 9 years ago

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Network Solids and Carbon: Crash Course Chemistry #34

926 views / 0 likes - added 9 years ago

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09:27 Popular
Silicon - The Internet's Favorite Element: Crash Course Chemistry #35

1,288 views / 0 likes - added 9 years ago

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09:04 Popular
Electrochemistry: Crash Course Chemistry #36

1,481 views / 0 likes - added 9 years ago

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09:42 Popular
The History of Atomic Chemistry: Crash Course Chemistry #37

1,042 views / 0 likes - added 9 years ago

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09:58 Popular
Nuclear Chemistry: Crash Course Chemistry #38

743 views / 0 likes - added 9 years ago

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11:18 Popular
Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry #39

1,721 views / 1 likes - added 9 years ago

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11:32 Popular
Hydrocarbon Power! - Crash Course Chemistry #40

901 views / 0 likes - added 9 years ago

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09:36 Popular
Alkenes&Alkynes - Crash Course Chemistry #41

1,082 views / 0 likes - added 9 years ago

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09:50 Popular
Aromatics and Cyclic Compounds - Crash Course Chemistry #42

1,768 views / 0 likes - added 9 years ago

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08:38 Popular
Hydrocarbon Derivatives - Crash Course Chemistry #43

1,112 views / 0 likes - added 9 years ago

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09:05 Popular
Nomenclature - Crash Course Chemistry #44

1,356 views / 0 likes - added 9 years ago

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10:15 Popular
Polymers - Crash Course Chemistry #45

1,738 views / 0 likes - added 9 years ago

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10:34 Popular
The Global Carbon Cycle - Crash Course Chemistry #46

1,693 views / 0 likes - added 9 years ago

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Featured
12:26 Popular
When is Thanksgiving? Colonizing America: Crash Course US History #2

879 views / 1 likes - added 9 years ago

In which John Green teaches you about the (English) colonies in what is now the United States. He covers the first permanent English colony at Jamestown, Virginia, the various theocracies in Massachusetts, the feudal kingdom in Maryland, and even a bit ab
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Where US Politics Came From: Crash Course US History #9

753 views / 0 likes - added 9 years ago

In which John Green teaches you where American politicians come from. In the beginning, soon after the US constitution was adopted, politics were pretty non-existent. George Washington was elected president with no opposition, everything was new and excit
Featured
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The Election of 1860&the Road to Disunion: Crash Course US History #18

875 views / 1 likes - added 9 years ago

In which John Green teaches you about the election of 1860. As you may remember from last week, things were not great at this time in US history. The tensions between the North and South were rising, ultimately due to the single issue of slavery. The Nort
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The Civil War, Part I: Crash Course US History #20

1,283 views / 11 likes - added 9 years ago

In which John Green ACTUALLY teaches about the Civil War. In part one of our two part look at the US Civil War, John looks into the causes of the war, and the motivations of the individuals who went to war. The overarching causes and the individual motiva
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Of Pentameter&Bear Baiting - Romeo&Juliet Part I: Crash Course English Literature #2

710 views / 0 likes - added 9 years ago

In which John Green examines Romeo&Juliet by William Shakespeare. John delves into the world of Bill Shakespeare's famous star-crossed lovers and examines what the play is about, its structure, and the context in which it was written. Have you ever wanted
12:07 Popular
A Long and Difficult Journey, or The Odyssey: Crash Course Literature 201

746 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th
11:43 Popular
Cell Meiosis: Crash Course Biology #13

983 views / 0 likes - added 9 years ago

Hank gets down to the nitty gritty about meiosis, the special type of cell division that is necessary for sexual reproduction in eukaryotic organisms. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Compl
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Your Immune System: Natural Born Killer - Crash Course Biology #32

903 views / 0 likes - added 9 years ago

Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system. Crash Course Biology is now available on DVD! http://dft.ba/-8bCC Like CrashCour
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Venice and the Ottoman Empire: Crash Course World History #19

847 views / 1 likes - added 9 years ago

In which John Green discusses the strange and mutually beneficial relationship between a republic, the citystate of Venice, and an Empire, the Ottomans--and how studying history can help you to be a better boyfriend and/or girlfriend. Together, the Ottoma
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The Amazing Life and Strange Death of Captain Cook: Crash Course World History #27

801 views / 2 likes - added 9 years ago

In which John Green teaches you about the life and death of one of history's great explorers, Captain James Cook of the British Navy. He charted large swaths of the Pacific ocean, laid claim to Australia and New Zealand, and died a bizarre death in the Sa
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World War II: Crash Course World History #38

1,547 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
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Sesame Street: Ed Sheeran- Two Different Worlds

678 views / 0 likes - added 9 years ago

At home you can play with your mommy and daddy, and you can talk whenever you want. At school you can play too - with your friends, but you must raise your hand to speak and follow your teachers’ instructions. You live in two different worlds. Subscribe t
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Sesame Street: Posse of 5 Good Men

545 views / 2 likes - added 9 years ago

Bad Bart, the meanest, toughest outlaw in the land, is on the loose and the sheriff wants to round up 5 good men to find him. Can you count to 5? Great, you can help the sheriff count and find 5 good men. Subscribe to the Sesame Street Channel here: http:
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Sesame Street: Cookie Monster Unboxes a Lunchbox

1,033 views / 2 likes - added 9 years ago

What do you think Cookie Monster will find in his lunchbox? Watch and find out. What do you want to see Cookie Monster 'unbox' next? Write Cookie a comment. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=S
01:57 Popular
Sesame Street: Elmo's Christmas Song

1,341 views / 1 likes - added 9 years ago

Elmo has a wish for Christmas time that makes him so happy. Can you guess what it is? It's not a toy or a bike. All Elmo wants this holiday is Elmo's friends and Elmo's family. That's Elmo's Christmas dream. Subscribe to the Sesame Street Channel here: ht
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Sesame Street: Raise Your Hand in Class

613 views / 0 likes - added 9 years ago

Raise your wing when you want to bok, lift it high, that's what you do. What? You're not a chicken? Oh, then raise your hand when you want to talk, and wait for the teacher to call on you. Subscribe to the Sesame Street Channel here: http://www.youtube.co
07:49 Popular
Sesame Street: Bert and Ernie Exchange Gifts

945 views / 6 likes - added 9 years ago

Bert wants to give Ernie and a soap dish for his rubber ducky, and Ernie wants to give Bert a box to store his paper clip collection. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet You can cat
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Sesame Street: Ian McKellen Teaches Cookie Monster to Resist

597 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
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Sesame Street: Imagine It's Something Else

636 views / 0 likes - added 9 years ago

If you are just dying to open your presents but mom and dad and grammy and grampy say you have to wait, you can just imagine its not a present and then you won't want to open it. Imagine it's a porcupine or a crocodile and then you won't want to touch tha
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Sesame Street: Believe in Yourself Song (Michael Bublé&Elmo)

889 views / 0 likes - added 9 years ago

You can be what you want to be and do what you want to do if you would just listen to Michael Bublé and believe in yourself. Some folks try to tell you you're not strong enough or smart enough and there are things you shouldn't do, but those people are qu
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Sesame Street: Five Words to Say More Often with Grover and Kid President

724 views / 0 likes - added 9 years ago

Kid President and Grover are here to give you Five Words You Should Say More Often! Isn't that so generous? They are selflessly giving you these five words. Whats that? You want to pay it forward? Awesome! Well, get involved in Socktober. It's as easy as
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Sesame Street: Aziz Ansari and Grover Get Ridiculous

566 views / 0 likes - added 9 years ago

Aziz Ansari and Grover want to explain today's vocabulary word in stove pipe hats and chicken costumes. Would you say that's a bit silly? Super silly? You're right. That's actually ridiculous, which is also today's word! Treat yourself to this ridiculous
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Sesame Street: Super Grover Helps a Duck to a Party

974 views / 0 likes - added 9 years ago

This little ducky got all dolled up for a party, but poor little Ducky didn't realize the party was across the stream. She didn't want to get her fancy party shoes all wet and she was too small to fly across the stream, so she called for the help of Super
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Sesame Street: Happiness is Looking Up (and Finding Cookies)

554 views / 0 likes - added 9 years ago

Cookie Monster is sad, and Ernie wants to help. Ernie suggests looking up to help feel happy. Have you ever tried looking up? Try it! Take a deep breath, throw back your shoulders, and look up! Who knows the great things you'll see when you look up: birds
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Sesame Street: Stop and Think Song

884 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
01:25
Sesame Street: Cookie and Herry Share A Bicycle

581 views / 0 likes - added 9 years ago

Are you and your brother arguing over the iPad at this very moment? Cookie Monster and Herry Monster are arguing too. They both want to ride the same bicycle and can't figure out who should get it. Luckily, Kermit knows the secret is to share. Watch this
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Sesame Street: Raise Your Hand Song

1,530 views / 0 likes - added 9 years ago

When you're in school and you've got something to say, raise your hand up high before you speak. It's a very simple rule when you want to talk in school. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=Sesa
02:42
Sesame Street: Janelle Monae - Power of Yet

684 views / 0 likes - added 9 years ago

Do you want to grow up to be an author, an astronaut, a scientist, or a doctor? That's great! But maybe you don't know how many bones are in an arm or even how to spell...yet. Believe in yourself, work hard, stay focused, and one day you'll get to where y
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Sesame Street: Follow My Teacher

448 views / 0 likes - added 9 years ago

Once a week Sarah's mom takes her to yoga class. Sarah always follows the teacher for directions. Want to know why? Because following directions is what you do when you want to do things right. When you get back to school this year, make sure you follow d
05:43 Popular
Sesame Street: Plan (Word on the Street Podcast)

872 views / 0 likes - added 9 years ago

What's the plan, Stan? You're probably wondering what a plan is to begin with. Great. This video will tell you all about the word plan, but here's a head start: a plan is something you make to reach a certain goal or destination. Want some cookies? Make a
03:04 Popular
Sesame Street: Elmo and Taye Diggs Go for a Drive

770 views / 1 likes - added 9 years ago

Taye Diggs wants to go for a drive with Elmo, but Taye didn't bring his car. So instead, Elmo and Taye use their imaginations as they take a drive in an automobile. Maybe they will use their imaginary car to pick up some milkshakes too. Subscribe to the S
05:49 Popular
Sesame Street: Strategy (Word on the Street Podcast)

850 views / 0 likes - added 9 years ago

When do you use a strategy? Do you even know what strategy means? OK. A strategy is a plan you make to achieve a goal. For example, say you want to make it to the moon. You'd probably want to figure out a plan of how to get there. Maybe before getting to
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Sesame Street: One Direction and Bert Sing the Alphabet

687 views / 1 likes - added 9 years ago

Liam and Harry from One Direction are pretty sure they know their ABCs, but they wanted to run through them one more time for good measure. Bert was there to help. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add
05:52 Popular
Sesame Street: Jealous (Word on the Street Podcast)

811 views / 0 likes - added 9 years ago

Jealous is a strong feeling you have when you want something that someone else has. Maybe its that ball that your neighbor has, or the blue toothbrush your older brother has, maybe you're jealous of your dad's mustache! It's normal to feel jealous, but it
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Sesame Street: ABC Song Playlist

1,592 views / 0 likes - added 9 years ago

Do you love the ABC's? Do you just want to hear the abcs over and over again? Wanna hear the ABC's in outer space? At the circus? On a safari? with Tyra Banks? Well you my friend are in luck because this video has the ABC's in those places and more! Subsc
05:47 Popular
Sesame Street: Respect (Word on the Street Podcast)

10.7k views / 5 likes - added 9 years ago

The word on the street this week is respect: treating people the way you want to be treated. Everyone understands the importance of respect, little kids, Superman, a bunch of chickens! Watch this video to hear what other people think about respect, and pl
05:15 Popular
Sesame Street: Cookie of Oz (Wizard of Oz Parody)

887 views / 4 likes - added 9 years ago

If Cookie Monster wants to find the Cookie of Oz, he must remember the directions. He must follow the chocolate chip road, do the opposite of what the cookie tin man says, and finally, go through the Emerald Green door. See the world turn from black and w
05:42 Popular
Sesame Street: Athlete (Word on the Street Podcast)

724 views / 0 likes - added 9 years ago

Want to be an athlete? An athlete is someone who trains to play a sport. You have to practice a lot, be determined, and love playing the sport you play! Who's your favorite athlete? Subscribe to the Sesame Street Channel here: http://www.youtube.com/subsc
01:34 Popular
Sesame Street: Words That Start with M

705 views / 0 likes - added 9 years ago

Let's spend the day with the letter M. Start off making some muffins with milk in the morning. Maybe then you win a medal for making such marvelous muffins. Might want to clean up if things get a little messy. By that time, the moon will be out and it wil
01:55 Popular
Sesame Street: The Letter O with Jon Hamm and Murray

839 views / 0 likes - added 9 years ago

Jon Hamm claims he's pretty good at the alphabet, that he knows all of his letters, consonants and vowels and all. Murray wanted to give him a test. The test was all about the letter O. It turns out Jon Hamm is a letter O expert! Subscribe to the Sesame S
06:44 Popular
Sesame Street: Irish Dancing School with Murray

2,527 views / 1 likes - added 9 years ago

Want to learn the Irish jig in time for St. Paddy's Day? Tag along with Murray and Ovejita to visit Irish Dancing School. Where do you think Lord of the Dance learned to jig? Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription
01:49
Sesame Street: Lauren Graham&Grover are Authors

553 views / 0 likes - added 9 years ago

An author is someone who writes books and stories. So you see, its quite simple, being an author. Just think of a story you want to tell and write it down, and there you have it. You, my friend are an author. So, what will your next book be about? Subscri
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Sesame Street: Forest Whitaker&The Count Imagine

617 views / 0 likes - added 9 years ago

Forest Whitaker doesn't have a magical wand, a spaceship, a conductor's baton, or a baseball bat; however, with his imagination and some encouragement from The Count, he can imagine an ordinary old stick to be anything he wants. Use your imagination with
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Sesame Street: Evan Lysacek teaches Elmo and Stinky about Confidence

608 views / 0 likes - added 9 years ago

Stinky wants to tell you about the word confidence, but he's not confident that he can do it. Of course, confidence is about believing in yourself and your ability to do what you want to do. If only Stinky could learn to practice the very definition of th
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Sesame Street: Buy a Wig from Grover

826 views / 0 likes - added 9 years ago

Wigs for Sale! Wigs for Sale! Grover has handmade head covers made from genuine ranch nylon. You may have a very good mouth, and a fine nose and two bulgy eyes, but if you feel something is missing on top, you might want to consider a wig from Grover's co
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Sesame Street: Cobie Smulders shows Grover how to be Courteous

831 views / 0 likes - added 9 years ago

Cobie Smulders shows Grover how to be courteous by using polite words and patience. If you want Grover to demonstrate how to curtsy, or describe a corsage, or tell you about the cretaceous period he can do that too. Subscribe to the Sesame Street Channel
02:38 Popular
Sesame Street: Romeo Santos and Elmo sing "Quiero Ser Tu Amigo"

970 views / 0 likes - added 9 years ago

When you see somebody you'd like to get to know, why not just walk up to them with an hola or hello? Or you could just say "Quiero Ser Tu Amigo." That means "I want to be your friend" Romeo Santos and Elmo sing a song to help you make friends. Try it out
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Sesame Street: Super Grover Finds The Perfect Ball for a Cactus

789 views / 0 likes - added 9 years ago

Poor Mr. Cactus deflated the very ball he wanted play with. Hopefully, Super Grover 2.0 can help him find a ball that won't deflate, or be too heavy, or melt. Hopefully. Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_cent
03:11 Popular
Sesame Street: Me Want It (But Me Wait)

757 views / 0 likes - added 9 years ago

Cookie Monster spoofs Icona Pop's hit song "I Love It" in this hilarious new video! Cookie Monster, the poster-child for someone needing to master self-regulation skills, attempts to explain these concepts while devising personal strategies on waiting to
02:46 Popular
Sesame Street: What rhymes with Mando?

844 views / 0 likes - added 9 years ago

Mando is brand new to Sesame Street! He wants to tell you all about the words that rhyme with his name. Listen to him cantando this song! Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For mor
05:08 Popular
Sesame Street: Bert and Ernie's Great Adventures -- Magicians

890 views / 0 likes - added 9 years ago

Bert and Ernie are Magicians whose rabbit no longer wants to be a mere disappearing object. 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
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Adorable Kai on Being a Superhero

610 views / 0 likes - added 9 years ago

The 4-year-old who takes "adorable" to the next level told Ellen about what he would want his superpower to be. Brace yourself for this answer.
02:08 Popular
"Snowman" Clip - The Story of Frozen: Making a Disney Animated Classic

1,842 views / 3 likes - added 9 years ago

Did you know "Do You Want to Build a Snowman?" almost did not make the final cut? Learn more this Tuesday at 8pm on ABC in The Story of Frozen: Making a Disney Animated Classic.Viewers will get a rare look inside Walt Disney Animation Studios and unpreced
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Oreo's "Wonderfilled" Song - Pentatonix

639 views / 0 likes - added 9 years ago

We were so excited when Oreo asked us to participate in their "Wonderfilled' Campaign! We roamed the streets of NYC singing our arrangement of this happy jingle, and we wanted to share this video with you before our next video drops on Monday! Enjoy :) To
51:52 Popular
You Think You Know Dinosaurs - Think Again!

1,418 views / 7 likes - added 9 years ago

Large lizards stomping around the planet - that's all to dinosaurs right? WRONG! Some dinosaurs had brightly colored feathers. Some dinosaurs were attentive parents. Some dinosaurs gave birth to live young rather than hatching them in eggs. Want to see? I
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Sympathetic Nervous System: Crash Course A&P #14

686 views / 0 likes - added 9 years ago

Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system. -- Table of Contents Sympathetic Nervous System Controls the Body's Stress Response 0:26 How Signals Travel to Effectors 1:48 Ace
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Democracy, Authoritarian Capitalism, and China: Crash Course World History 230

884 views / 1 likes - added 9 years ago

In which John Green teaches you about the end of World History, and the end of the world as we know it, kind of. For the last hundred years or so, it seemed that one important ingredient for running an economically successful country was a western-style d
15:40 Popular
Capitalism and the Dutch East India Company: Crash Course World History 229

1,168 views / 1 likes - added 9 years ago

Want to help keep CrashCourse going? Consider becoming a Patron and help us keep making awesome content for such awesome people. SUBBABLE SUBSCRIBERS READ FURTHER↓ https://www.patreon.com/crashcourse In which John Green teaches you about the Vereenigde Oo
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Mercury: Crash Course Astronomy #13

1,267 views / 9 likes - added 9 years ago

Mercury is the closest planet to the sun. It has no atmosphere and is, as such, covered in craters. It's also incredibly hot but, surprisingly, has water ice hiding beneath its surface. -- Table of Contents Closest Planet to the Sun 0:03 Rotation Locked t
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02:28 Popular
Sesame Street: Two Headed Monster Reads A Story

704 views / 0 likes - added 9 years ago

Two-Headed Monster is reading a story. Sometimes reading can be hard, but follow Two-Headed Monster’s example and keep going until you get to the end of a book. Then you will want to read more and more and more! Subscribe to the Sesame Street Channel here
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Superbugs: The Empire Strikes Bacteria

681 views / 0 likes - added 9 years ago

Check out GROSS SCIENCE: http://bit.ly/1DH5zbv Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart↓ More info and sources below ↓ Are we entering the post-antibiotic era? Antibiotic-resistant bacteria are on the rise, with millions of infections re
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07:05
The Recipe For Life…

601 views / 0 likes - added 9 years ago

We're cookin' in the primordial kitchen! Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart↓ More info and sources below ↓ If the human body could be distilled down into one molecule, what would our chemical formula be? And WHY is it that way? Is
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05:06 Popular
%$?# Allergies!

894 views / 0 likes - added 9 years ago

It’s the season for sneezin’! Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Springtime means the arrival of green grass, bright flowers, and buzzing bees. But for many of us, it’s also about sneezing, watery re
04:01 Popular
How Many Stars Are There?

1,006 views / 2 likes - added 9 years ago

Counting stars from the shore of the cosmic ocean… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ LIKE THE SHIRT I'M WEARING? It's glow in the dark! You can get it here (along with space undies and other good st
03:12 Popular
What Color Is The Universe?

1,594 views / 2 likes - added 9 years ago

Hint: It’s not black Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ When you stare up at the night sky, you might think that the universe is really black, but that’s just because our eyes aren’t sensitive enough
06:35 Popular
Attack Of The Zombie Parasites!

822 views / 3 likes - added 9 years ago

Did someone say BRAAAAAINS…? Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Shows like The Walking Dead are full of hungry, mindless, surprisingly fleet-footed armies of brain-eating zombies. Could they actually
04:47 Popular
Why Does February Only Have 28 Days?

943 views / 4 likes - added 9 years ago

It's not the size of the month that matters… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Why does February only get 28 days when all the other months get 30 or 31? The answer is part superstition, part politi
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07:23 Popular
Why Vaccines Work

907 views / 1 likes - added 9 years ago

A dose of reality about vaccines… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ As more and more parents are choosing not to vaccinate their children or are vaccinating them later, diseases like measles are mak
04:46 Popular
How Many Heartbeats Do We Get?

1,390 views / 0 likes - added 9 years ago

Science really gets my heart going… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart
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04:05
What Is Déjà Vu?!

536 views / 0 likes - added 9 years ago

I feel like I’ve seen this video before… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobe
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5 Weird Involuntary Behaviors Explained!

759 views / 0 likes - added 9 years ago

Yawns, hiccups, twitchy eyes (and more) explained! Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on In
05:02 Popular
There's No Such Thing As Cold

745 views / 1 likes - added 9 years ago

If cold isn’t real, then how can I feel it? Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram
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04:34 Popular
How Many Smells Can You Smell?

807 views / 0 likes - added 9 years ago

How do we smell? Great! Thanks for asking! Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram:
06:34 Popular
Does My Dog Know What I'm Thinking?

856 views / 0 likes - added 9 years ago

Head to BrainCraft for more doggy science! http://youtu.be/OBy3idLwwYM Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesm
07:34 Popular
Why People Don't Believe In Climate Science

788 views / 0 likes - added 9 years ago

Watch Part 1:“The Facts” http://youtu.be/ffjIyms1BX4 Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on
06:20
Climate Science: What You Need To Know

639 views / 1 likes - added 9 years ago

Learn the basic science of climate change in 24 easy steps Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Foll
04:32 Popular
Where Do Birds Go In Winter?

894 views / 1 likes - added 9 years ago

And where do they keep their suitcases? Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: ht
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09:12 Popular
The Sixth Extinction

798 views / 2 likes - added 9 years ago

This time, we’re the asteroid. Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://inst
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05:31
Why Are Some People Left-Handed?

678 views / 0 likes - added 9 years ago

The science of their sinister ways… Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http:/
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14:04 Popular
How To Fold An Origami Easter Bunny

1,350 views / 4 likes - added 9 years ago

Easter is coming up, so today we wanted to learn how to fold an origami Easter Bunny! EMAIL A PHOTO OF YOUR ART: myart@artforkidshub.com MAIL US YOUR ART: Art for Kids Hub P.O. Box 927 Pleasant Grove, UT 84062 SUBSCRIBE for regular drawing and art lessons
23:59 Popular
How To Draw Mega Man

1,092 views / 0 likes - added 9 years ago

How to draw Mega Man! Today we're using Sharpies, but we're drawing on blue construction paper. You can still use a white piece of paper if you want. The blue paper will be the main color of Mega Man, then we'll use light colors for highlights and dark co

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