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*About Khan Academy*
Khan Academy is a nonprofit organization. Our mission is to provide a free, world-class education to anyone, anywhere. With more than one billion children world-wide being impacted by school closures, we are experiencing soaring demand for our free resources. Our ability to quickly increase our services is made possible by Bank of America, AT&T, Google.org, Novartis, and Fastly. If you are able, please consider making a donation: https://www.khanacademy.org/donate. Together, we can keep everyone learning.
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https://www.youtube.com/watch?v=8kQjCbna2GI
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Khan Academy's AI-powered teaching assistant and student tutor, Khanmigo, has been upgraded with brand new features that are making it so much easier for teachers to reach their students where they are. Join Khan Academy's professional learning specialist and former classroom teacher, Michele, to see how Khanmigo can supercharge the learning in your classroom.
For more from Khanmigo, visit: khanmigo.ai
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https://www.youtube.com/watch?v=Ak-1MtnbzUg
Note: All Khan Academy content is available for free at (www.khanacademy.org)
John Dickerson introduces the importance of midterm elections. John Dickerson is co-host of CBS This Morning. He was previously CBS News' Chief Washington Correspondent, Political Director and anchor of Face The Nation. Dickerson is also a contributor to Slate's Political Gabfest and to The Atlantic. During the 2016 presidential campaign, Dickerson moderated CBS News' two presidential debates. Prior to CBS, Dickerson was Slate Magazine's Chief Political correspondent and covered politics for twelve years for Time magazine.
View more lessons or practice this subject at https://www.khanacademy.org/humanities/us-government-and-civics/government-civics-with-cbss-john-dickerson/why-it-matters/v/why-do-midterm-congressional-elections-matter?utm_source=youtube&utm_medium=desc&utm_campaign=usgovernmentandcivics
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc
Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc
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https://www.youtube.com/watch?v=kofT_ctT-JY
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.
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
Subscribe to Khan Academy’s Algebra channel:
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Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
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https://www.youtube.com/watch?v=LyIZEnGYCI8
Note: All Khan Academy content is available for free at (www.khanacademy.org)
100-105, pg. 165. Created by Sal Khan.
Watch the next lesson: https://www.khanacademy.org/test-prep/gmat/problem-solving/v/gmat-math-20?utm_source=YT&utm_medium=Desc&utm_campaign=GMAT
Missed the previous lesson? https://www.khanacademy.org/test-prep/gmat/problem-solving/v/gmat-math-18?utm_source=YT&utm_medium=Desc&utm_campaign=GMAT
GMAT on Khan Academy: Sal works through the 249 problem solving questions in chapter 5 of the the 11th edition of the official GMAC GMAT Review (ISBN Number: 0-9765709-0-4 published in 2005)
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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https://www.youtube.com/watch?v=m44llkkWI0g
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Introduction to the phosphorous cycle.
Watch the next lesson: https://www.khanacademy.org/science/biology/ecology/biogeochemical-cycles/v/eutrophication-and-dead-zones
Missed the previous lesson? Watch here: https://www.khanacademy.org/science/biology/ecology/biogeochemical-cycles/v/nitrogen-cycle
Ecology on Khan Academy: Why are polar bears found only in the Arctic? Why does mildew grow in your shower and not (hopefully) in your sock drawer? Learn how ecologists study the interactions between organisms and their environment, and how these interactions affect where, and in what numbers, different types of organisms are found.
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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https://www.youtube.com/watch?v=tm2LG5ScT1g
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Systems of Three Variables 2
Watch the next lesson: https://www.khanacademy.org/math/algebra2/systems_eq_ineq/fancier_systems_precalc/v/solutions-to-three-variable-system?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII
Missed the previous lesson?
https://www.khanacademy.org/math/algebra2/systems_eq_ineq/fancier_systems_precalc/v/systems-of-three-variables?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII
Algebra II on Khan Academy: Your studies in algebra 1 have built a solid foundation from which you can explore linear equations, inequalities, and functions. In algebra 2 we build upon that foundation and not only extend our knowledge of algebra 1, but slowly become capable of tackling the BIG questions of the universe. We'll again touch on systems of equations, inequalities, and functions...but we'll also address exponential and logarithmic functions, logarithms, imaginary and complex numbers, conic sections, and matrices. Don't let these big words intimidate you. We're on this journey with you!
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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https://www.youtube.com/watch?v=f7cX-Ar2cEM
Note: All Khan Academy content is available for free at (www.khanacademy.org)
By convention, we define positive current to flow in the direction a positive charge would move. Electrons (with their negative charge) move in the opposite direction of the positive current arrow.
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https://www.youtube.com/watch?v=17EhKw2tsu4
Note: All Khan Academy content is available for free at (www.khanacademy.org)