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Introduction to cellular respiration, including glycolysis, the Krebs Cycle, and the electron transport chain.

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Biology on Khan Academy: Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible. Dive in to learn more about the many branches of biology and why they are exciting and important. Covers topics seen in a high school or first-year college biology course.

About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.

For free. For everyone. Forever. #YouCanLearnAnything

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/hu....manities/world-histo

Created by Sal Khan.

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World history on Khan Academy: From the earliest civilizations to the modern world, geography, religion, trade, and politics have bound peoples and nations together — and torn them apart. Take a journey through time and space and discover the fascinating history behind the complex world we inhabit today.

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/ap-calculus-bc/bc

Applying the formal definition of the limit of a sequence to prove that a sequence converges. Created by Sal Khan.

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AP Calculus BC on Khan Academy: Learn AP Calculus BC - everything from AP Calculus AB plus a few extra goodies, such as Taylor series, to prepare you for the AP Test

About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.

For free. For everyone. Forever. #YouCanLearnAnything

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/precalculus/x9e81

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Precalculus on Khan Academy: You may think that precalculus is simply the course you take before calculus. You would be right, of course, but that definition doesn't mean anything unless you have some knowledge of what calculus is. Let's keep it simple, shall we? Calculus is a conceptual framework which provides systematic techniques for solving problems. These problems are appropriately applicable to analytic geometry and algebra. Therefore....precalculus gives you the background for the mathematical concepts, problems, issues and techniques that appear in calculus, including trigonometry, functions, complex numbers, vectors, matrices, and others. There you have it ladies and gentlemen....an introduction to precalculus!

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/calculus-all-old/

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Differential calculus on Khan Academy: Limit introduction, squeeze theorem, and epsilon-delta definition of limits.

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

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Welcome to Circle Time with Khan Academy Kids! Today, our friends Caroline and Sophie read the book “Sidewalk Chalk” by Cynthia Platt. Read along as Peck dives into imaginary play with his chalk, his camp, and his amazing friends. What could you make with a piece of chalk today? Let your imagination soar!

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Learn more counting, addition, and subtraction lessons in the FREE Khan Academy Kids app! https://go.learn.khanacademy.o....rg/khanacademy/YouTu

Peck uses a number line to count backward starting from the number ten. Great job, Peck!

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Can you think of something that is red? How about a cherry! Learn about the primary colors red, blue, and yellow with Sandy the Dingo from Khan Academy Kids.

Visit us at http://www.khankids.org to learn more about Khan Academy Kids, a free educational app for preschool through 2nd grade.

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Get ready for Circle Time with Khan Academy Kids! Join our friends Caroline and Sophie as they read the book “Harvest Time” by Cynthia Platt. In the story, kids can travel along with Sandy and Peck as they visit a farm, meet a scarecrow, and pull vegetables from the garden. Learn new words like barn, farm, and corn, and then use these words to make a sentence!

Check out our printable activities for hands-on fun!
http://khan.co/KhanKids-Printables

Learn more about Khan Academy Kids, our free educational app for children ages 2-7 at http://www.khankids.org.

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Learn the letter H with Ollo the Elephant from Khan Academy Kids!

Visit us at http://www.khankids.org to learn more about Khan Academy Kids, a free educational app for preschool through 2nd grade.

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You can also access other letters of the alphabet on our Letters and Letter Sounds playlist here: http://khan.co/KhanKids-Letters

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The blue fruit is Peck's favorite food! The letters "u" and "e" team up to make the long /ū/ sound. The letters "u" and "i" team up to make the long /ū/ sound too. Learn about vowel teams with Reya the Red Panda from Khan Academy Kids.

Visit us at http://www.khankids.org to learn more about Khan Academy Kids, a free educational app for preschool through 2nd grade.

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You can access other videos about vowel teams on our playlist here: http://khan.co/KhanKids-VowelTeams.

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Learn about dialog and other reading comprehension lessons in the FREE Khan Academy Kids app! https://go.learn.khanacademy.o....rg/khanacademy/YouTu

To improve reading comprehension, Reya reinforces the techniques of stopping and re-reading to check the understanding of a story. Great idea, Reya!

Visit us at http://www.khankids.org to learn more about Khan Academy Kids, a free educational app for preschool through 2nd grade available on Apple, Google Play, and Amazon app stores.

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Credit:
Created by Daniel Turner (B.A. (Hons) in History, University College London)
Script: Conan White
Narrator:

Chris Kane
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sources:
The Kaiser's Escapees: Allied POW escape attempts during the First World War
By Philip D. Chinnery
Meeting the Enemy: The Human Face of the Great War
By Richard van Emden

The Ghosts of the Great War: Reflections on Belgium
By Joan McMahon Flatt

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Petardiers were special units of late medieval and early renaissance armies.
These explosive specialists were not engaged in open battles, but only during sieges where their skills were the most useful.

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Credit:
Created by Daniel Turner

Narrator:

Chris Kane
https://vocalforge.com/

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Season X: Highlanders is bringing Scottish might to Conqueror's Blade. Play and get 7 days of premium time FREE here: https://bit.ly/3GGhKcq
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The Soldier Who Would Not Die in the Boer War, World War I, World War II...

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Credit:
Created by Daniel Turner (B.A. (Hons) in History, University College London)
Script: Dejan Milivojevic
Narrator:

Chris Kane
https://vocalforge.com/

Are you one of those people that always has 47+ tabs open in their browser?
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The Antonov 225, once the largest aircraft in the world, the heaviest aircraft ever built and with the largest wingspan, now rests in pieces at the Hostomel airport near Kyiv. It was built as a carrier for the Soviet space craft Buran, it had survived the dissolution of Soviet Union, storage time, repairs and refurbishment, financial difficulties and problems and would serve for many years, carrying huge objects, machines and cargo only to end its career as a victim of battle that took place around it.

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Credit:
Created by Daniel Turner (B.A. (Hons) in History, University College London)
Script: Conan White
Narrator:

Chris Kane
https://vocalforge.com/

Books
Energiya-Buran: The Soviet Space Shuttle By Bart Hendrickx, Bert Vis
Mega Machines: Roar into action with these super-charged racers! By Paul Harrison

Big Wings: The Largest Aeroplanes Ever Built By Philip Kaplan

Soviet Life, Issues 7-12

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Credit:
Show Created by Daniel Turner (B.A. (Hons) in History, University College London)
Script Writer: Robert de Graaf
Narrator:

Bryan 'Lazlo' Beauregard

Get your free trial of MagellanTV here: https://try.magellantv.com/simplehistory. It's an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV is a new kind of streaming service run by filmmakers with 3,000+ documentaries! Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/explore/history

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Credit:
Created by Daniel Turner
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Chris Kane
https://vocalforge.com/

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War in general isn’t a pleasant place to be, however, it's quite clear that there are some jobs that are simply worse than others. While some soldiers may find themselves in unfortunate positions through direct orders of command, there are other roles that people have willingly volunteered for... and then discovered exactly why it was a terrible, terrible idea. Here are some jobs throughout military history you absolutely do NOT want to volunteer for.

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Credit:
Show Created by Daniel Turner (B.A. (Hons) in History, University College London)
Script: Natasha Martell
Narrator:

Chris Kane
https://vocalforge.com/

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Teddy Roosevelt had no time to let a bullet to the chest ruin his speech..

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Credit:
Created by Daniel Turner

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Chris Kane
https://vocalforge.com/

Script:
Conan White

Sources:
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