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CrashCourse

At Crash Course, we believe that high-quality educational videos should be available to everyone for free! Subscribe for weekly videos from our current courses! The Crash Course team has produced more than 60 courses on a wide variety of subjects, ranging from the humanities to sciences and so much more! We also recently teamed up with Arizona State University to bring you more courses on the Study Hall channel.

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  • September 21 · 20 min

    Progressive Presidents: Crash Course US History #29

    In which John Green teaches you about the Progressive Presidents, who are not a super-group of former presidents who create complicated, symphonic, rock soundscapes that transport you into a fantasy fugue state. Although that would be awesome. The presidents most associated with the Progressive Era are Theodore Roosevelt, William Taft, and Woodrow Wilson. During the times these guys held office, trusts were busted, national parks were founded, social programs were enacted, and tariffs were lowered. It wasn't all positive though, as their collective tenure also saw Latin America invaded A LOT, a split in the Republican party that resulted in a Bull Moose, all kinds of other international intervention, and the end of the Progressive Era saw the United States involved in World War. If all this isn't enough to entice, I will point out that two people get shot in this video. Violence sells, they say. Hey teachers and students - Check out CommonLit's free collection of reading passages and curriculum resources to learn more about the events of this episode. The era of progressive presidents began with Teddy Roosevelt, who felt that conservation was a national duty: https://www.commonlit.org/texts/conservation-as-a-national-duty Teddy Roosevelt is remembered for fighting hard for his causes, as exemplified in his famous “Man in the Arena” Speech: https://www.commonlit.org/texts/the-man-in-the-arena Chapters: Introduction: Progressive Presidents 00:00 Nationalization 0:47 Theodore "Teddy" Roosevelt 1:42 Square Deal 2:16 National Parks 3:12 William Howard Taft 3:33 The 16th and 18th Amendments 4:00 The Election of 1912 4:31 New Freedom vs New Nationalism 5:26 The Bull Moose Party 5:56 Woodrow Wilson's Election 6:40 Mystery Document 6:52 Woodrow Wilson's Policies 8:06 Progressivism & International Affairs 9:14 The Panama Canal 10:21 The Roosevelt Corollary 10:53 Taft's Dollar Diplomacy 11:38 Wilson's Foreign Policy 12:03 Roosevelt, Taft, and Wilson's Legacies 13:37 Credits 14:34 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 21 · 12 min

    Equilibrium Equations: Crash Course Chemistry #29

    In which Hank shows you that, while it may seem like the Universe is messing with us, equilibrium isn't a cosmic trick. Here, he shows you how to calculate equilibrium constant & conditions of reactions and use RICE tables all with some very easy, not-so-scary math. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ -- Table of Contents Calculating an Equilibrium Constant 1:21 Calculating Conditions of Reactions 3:00 RICE Tables 4:26 Quadratic Equations 6:43 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 21 · 17 min

    Plant Anatomy and Physiology: Plants Are Hardcore: Crash Course Biology #42

    Plants may not seem like they’re doing much, but if you look closer, you’ll find a whole world just lurking beyond the surface. We’re talking chemical defenses, highways, and even ways to change the weather. In this episode, we’ll learn how plants get resources, get rid of waste, stay defended, govern themselves, and much more. Introduction: How Plants Work 00:00 Meet the angiosperms 00:58 How plants transport nutrients 02:04 How plants eliminate waste 05:28 Plant defenses 08:05 Plant Communication and Reproduction 09:55 Review & Credits 11:47 This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit https://BioInteractive.org/CrashCourse for more information. Are you an educator looking for what NGSS Standards are covered in this episode? Check out our Educator Standards Database for Biology here: https://www.thecrashcourse.com/biologystandards Check out our Biology playlist here: https://www.youtube.com/playlist?list=PL8dPuuaLjXtPW_ofbxdHNciuLoTRLPMgB Watch this series in Spanish on our Crash Course en Español channel here: https://www.youtube.com/playlist?list=PLkcbA0DkuFjWQZzjwF6w_gUrE_5_d3vd3 Sources: https://docs.google.com/document/d/1GLDtAXE6ekg4Chk2qN3TYbNt0pJbyaHqTqRd6QY8pd4/edit?usp=sharing *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Leah H., David Fanska, Andrew Woods, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Jon Allen, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Barrett & Laura Nuzum, Les Aker, William McGraw, Vaso, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pineapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks __ Want to find Crash Course elsewhere on the internet? Instagram - https://www.instagram.com/thecrashcourse/ Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 21 · 11 min

    Separation of Powers and Checks and Balances: Crash Course Government and Politics #3

    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 any branch from becoming too powerful. In reality, the system was designed to keep the President from becoming some kind of autocrat. For the most part, it has worked. Craig will call in the clones to explain which powers belong to which branches and to reveal some secret perks that the Supreme Court justices enjoy. Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Support is provided by Voqal: http://www.voqal.org Chapters: Introduction 00:00 Separation of Powers 0:25 Checks & Balances 2:28 Legislative Branch powers over the Executive Branch 2:58 Legislative Branch powers over the Judiciary Branch 3:39 Executive Branch powers over the Legislative Branch 4:37 Executive Branch powers over the Judiciary Branch 4:59 Judiciary Branch powers over the Legislative & Executive Branches 5:20 Why do we have checks & balances? 6:22 Credits 7:58 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 21 · 15 min

    Bioinformatics: How Data Saves Lives: Crash Course Biology #40

    On its own, a huge DNA sequence is a meaningless pile of data — so, how do biologists figure out what it means? They turn to the power of bioinformatics! In this episode, we’ll learn what bioinformatics is, how it works, and how scientists have used it to better understand everything from evolution to a viral epidemic. Introduction: Pizza Data 00:00 Bioinformatics 1:20 Algorithms 2:33 The Human Genetic Code 3:28 The BRCA1 Gene 5:07 Transcriptomes 6:14 The Zika Virus 7:22 Bioinformatics & Programming 8:57 Review & Credits 10:07 This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit https://BioInteractive.org/CrashCourse for more information. Are you an educator looking for what NGSS Standards are covered in this episode? Check out our Educator Standards Database for Biology here: https://www.thecrashcourse.com/biologystandards Check out our Biology playlist here: https://www.youtube.com/playlist?list=PL8dPuuaLjXtPW_ofbxdHNciuLoTRLPMgB Watch this series in Spanish on our Crash Course en Español channel here: https://www.youtube.com/playlist?list=PLkcbA0DkuFjWQZzjwF6w_gUrE_5_d3vd3 Sources: https://docs.google.com/document/d/1GLDtAXE6ekg4Chk2qN3TYbNt0pJbyaHqTqRd6QY8pd4/edit?usp=sharing *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Leah H., David Fanska, Andrew Woods, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Jon Allen, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Barrett & Laura Nuzum, Les Aker, William McGraw, Vaso, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pineapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks __ Want to find Crash Course elsewhere on the internet? Instagram - https://www.instagram.com/thecrashcourse/ Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 21 · 20 min

    The Progressive Era: Crash Course US History #27

    In which John Green teaches you about the Progressive Era in the United States. In the late 19th and early 20th century in America, there was a sense that things could be improved upon. A sense that reforms should be enacted. A sense that progress should be made. As a result, we got the Progressive Era, which has very little to do with automobile insurance, but a little to do with automobiles. All this overlapped with the Gilded Age and is a little confusing, but here we have it. Basically, people were trying to solve some of the social problems that came with the benefits of industrial capitalism. To oversimplify, there was a competition between the corporations' desire to keep wages low and workers' desire to have a decent life. Improving food safety, reducing child labor, and unions were all on the agenda in the Progressive Era. While progress was being made, and people were becoming freer, these gains were not equally distributed. Jim Crow laws were put in place in the south, and immigrant rights were restricted as well. So once again on Crash Course, things aren't so simple. Hey teachers and students - Check out CommonLit's free collection of reading passages and curriculum resources to learn more about the events of this episode. The Progressive Era was marked by rapid reactions to the Gilded Age: https://www.commonlit.org/texts/the-progressive-era Literature such as The Jungle revealed the horrifying conditions of factory industries, one of several which were overhauled with new progressive regulations: https://www.commonlit.org/texts/excerpt-from-the-jungle Chapters: Introduction: The Progressive Era 00:00 The Progressive Era 1:06 Social Concerns of the Progressive Era 1:53 Mystery Document 2:48 The Jungle 4:04 Muckracking, Journalism, and Photography 4:22 Union Organizing 4:55 The Industrial Workers of the World 5:46 Mass Consumption Culture 6:29 The Labor Problem 7:39 Government Solutions to Social Problems 8:46 The Socialist Party 9:30 The 17th Amendment 10:17 Initiatives & Referendums 10:36 Voter Suppression & Jim Crow Laws 11:14 Plessy v. Ferguson 12:12 Booker T. Washington 12:46 W.E.B. DuBois 13:28 Credits 14:30 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 21 · 16 min

    Growth, Cities, and Immigration: Crash Course US History #25

    In which John Green teaches you about the massive immigration to the United States during the late 19th and early 20th centuries. Immigrants flocked to the US from all over the world in this time period. Millions of Europeans moved to the US where they drove the growth of cities and manned the rapid industrialization that was taking place. In the western US many, many Chinese immigrants arrived to work on the railroad and in mines. As is often the case in the United States, the people who already lived in the US reacted kind of badly to this flood of immigrants. Some legislators tried to stem the flow of new arrivals, with mixed success. Grover Cleveland vetoed a general ban on immigration, but the leadership at the time did manage to get together to pass an anti-Chinese immigration law. Immigrants did win some important Supreme Court decisions upholding their rights, but in many ways, immigrants were treated as second-class citizens. At the same time, the country was rapidly urbanizing. Cities were growing rapidly and industrial technology was developing new wonders all the time. John will cover all this upheaval and change, and hearken back to a time when racial profiling did in fact boil down to analyzing the side of someone's face. Hey teachers and students - Check out CommonLit's free collection of reading passages and curriculum resources to learn more about the events of this episode. As America industrialized further and manufacturing grew, a rush of new immigrants came to America seeking job opportunities: https://www.commonlit.org/texts/the-rush-of-immigrants Immigrants often entered through New York's Ellis Island where the Statue of Liberty bore the iconic phrase "Give me your tired, your poor,": https://www.commonlit.org/texts/the-new-colossus Immigrants experienced culture shock and hard living conditions during this time, as documented in later memoirs such as "America and I": https://www.commonlit.org/texts/america-and-i Chapters: Introduction 00:00 The Agricultural Golden Age 0:39 Americans Move to Cities 1:54 New York City & Chicago 2:41 The Rise of Immigration 3:21 Immigrant Cities 4:05 Southern & Eastern European Immigrants 5:30 Chinese Immigrants 6:31 Mass Immigration: A Global Phenomenon 7:44 Mystery Document 8:34 Why Did Immigrants Come to America? 9:36 Living Conditions in Immigrant Cities 10:02 Wealth Segregation 11:00 Credits 12:12 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 21 · 16 min

    The Great Depression: Crash Course Black American History #28

    During economic crises, marginalized communities are more susceptible to the harm and struggle that come with these downturns. Today we'll talk about the Great Depression, which lasted from 1929 until the US entered World War II. This depression profoundly changed the US economy, and we'll focus on how the depression impacted Black Americans. Clint's book, How the Word is Passed is available now! https://bookshop.org/a/3859/9780316492935 VIDEO SOURCES ● Cheryl Lynn Greenberg, To Ask for an Equal Chance: African Americans in the Great Depression (Lanham, MD: Rowman & Littlefield Publishers, Inc., 2009). ● Keisha N. Blain, Set the World on Fire: Black Nationalist Women and the Global Struggle for Freedom (University of Pennsylvania Press, 2018). ● Robin D.G. Kelley, Hammer and Hoe: Alabama Communist During the Great Depression (Chapel Hill, NC: University of North Carolina Press, 1990). ● Erik McDuffie, Sojourning for Freedom: Black Women, American Communism, and the Making of Black Left Feminism (Durham: Duke University Press, 2011). Aaron Douglass - http://www.aarondouglasartfair.com/history/ ** Watch our videos and review your learning with the Crash Course App! Download here for Apple Devices: https://apple.co/3d4eyZo Download here for Android Devices: https://bit.ly/2SrDulJ Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Dave Freeman, Hasan Jamal, DL Singfield, Jeremy Mysliwiec, Shannon McCone, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel A Stevens, Vincent, Michael Wang, Stacey Gillespie, Jaime Willis, Krystle Young, Michael Dowling, Alexis B, Burt Humburg, Aziz Y, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Rachel Creager, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, William McGraw, Andrei Krishkevich, ThatAmericanClare, Rizwan Kassim, Sam Ferguson, Alex Hackman, Jirat, Katie Dean, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Jessica Wode, Mark, Caleb Weeks __ Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 20 · 13 min

    Moon Phases: Crash Course Astronomy #4

    In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases. Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crashcourse-astronomy-poster -- Chapters: Why does the Moon Have Phases? 00:00 New Moon 2:26 Waxing Crescent 4:17 First Quarter 4:35 Waxing Gibbous 5:15 Full Moon 5:32 Waning Gibbous, Third Quarter, and Waning Crescent 6:26 Earthshine 7:20 Review 8:58 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids -- PHOTOS http://en.wikipedia.org/wiki/Moon#mediaviewer/File:FullMoon2010.jpg https://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=1879 http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.0505.jpg http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.0553.jpg http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.0634.jpg http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.0706.jpg http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.0809.jpg http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.0905.jpg http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.1011.jpg http://svs.gsfc.nasa.gov/vis/a000000/a004200/a004236/frames/730x730_1x1_30p/moon.1145.jpg http://en.wikipedia.org/wiki/Moon#mediaviewer/File:NASA-Apollo8-Dec24-Earthrise.jpg http://global.jaxa.jp/press/2008/04/img/20080411_kaguya_01l.jpg http://global.jaxa.jp/press/2008/04/20080411_kaguya_e.html http://www.esa.int/Our_Activities/Operations/First_view_of_Earth_as_Rosetta_approaches_home http://commons.wikimedia.org/wiki/File:Sachin_Nigam_-_starry_moon_%28by-sa%29.jpg https://www.flickr.com/photos/badastronomy/14397419837/ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • September 20 · 15 min

    Should We Separate Art from the Artist?: Crash Course Art History #5

    In this episode of Crash Course Art History, we’ll keep digging into the myth of the Great Artist, with whether we can—or should—separate artists’ personal actions and beliefs from the art they create. Art historians are exploring new ways to think about artists’ relationship to their work and how to talk about controversial art. Introduction: Great Artists or Monsters? 00:00 "Great Artists" 00:48 The Romantics & Self-Portraits 01:53 The Avant-garde & Surrealism 03:10 Van Gogh & Gaugin 04:59 Artistic Collaboration 06:39 Separating Art from the Artist 07:48 Review & Credits 10:07 Image Descriptions: https://docs.google.com/document/d/1ETiCxe4GrVzFii7dBhF42oHx1EUCCh5y12wbtUjsH8A/edit Sources: https://docs.google.com/document/d/1GW2NKzhpMNMmRyAFJVhFJG9cSfUOMRL-QrcWuHcWcIA/edit?usp=sharing *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Leah H., David Fanska, Andrew Woods, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Breanna Bosso, Matt Curls, Jennifer Killen, Jon Allen, Sarah & Nathan Catchings, team dorsey, Bernardo Garza, Trevin Beattie, Eric Koslow, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Barrett & Laura Nuzum, Les Aker, William McGraw, Vaso, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pineapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks __ Want to find Crash Course elsewhere on the internet? Instagram - https://www.instagram.com/thecrashcourse/ Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse CC Kids: http://www.youtube.com/crashcoursekids Learn more about your ad choices. Visit megaphone.fm/adchoices

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