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Khan Academy

Khan Academy

Khan Academy is a nonprofit providing a free, world-class education for anyone, anywhere. Our interactive practice problems, articles, and videos help students succeed in math, biology, chemistry, physics, history, economics, finance, grammar, and many other topics.

Khan Academy provides teachers with data on how their students are doing so they can identify gaps in learning and provide tailored instruction. We also offer free personalized SAT and LSAT practice in partnership with the College Board and the Law School Admission Council.

Our resources have been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy each month.

Want to extend your learning beyond YouTube? Practice what you've just discovered for free: www.khanacademy.org

Links:
khanacademy.org: https://www.khanacademy.org?utm_source=youtube&utm_medium=about
Khanmigo: https://blog.khanacademy.org/learner-khanmigo/?utm_source=youtube&utm_medium=email&utm_campaign=khanmigo-youtube
Khanmigo Writing Coach: https://www.khanmigo.ai/writingcoach
Android: https://play.google.com/store/apps/details?id=org.khanacademy.android&referrer=utm_source=youtubemainchannel&utm_medium=coverphoto
iOS: https://itunes.apple.com/app/apple-store/id469863705?pt=698519&ct=youtubemainchannelcoverphoto&mt=8
Math: https://www.khanacademy.org/math?utm_source=youtube&utm_medium=about
Science: https://www.khanacademy.org/science?utm_source=youtube&utm_medium=about
Computer science: https://www.khanacademy.org/computing?utm_source=youtube&utm_medium=about
Economics: https://www.khanacademy.org/economics-finance-domain?utm_source=youtube&utm_medium=about
Arts and humanities: https://www.khanacademy.org/humanities?utm_source=youtube&utm_medium=about
Test prep: https://www.khanacademy.org/test-prep?utm_source=youtube&utm_medium=about
Life skills: https://www.khanacademy.org/college-careers-more?utm_source=youtube&utm_medium=about
Donate: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=about

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  • 147 episodes
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  • English

Episodes 147

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  • Thursday · 12 min

    Quadratic inequalities | Polynomial and rational functions | Algebra II | Khan Academy

    Solving quadratic inequalities using factoring Watch the next lesson: https://www.khanacademy.org/math/algebra2/polynomial_and_rational/quad_ineq/v/quadratic-inequalities-visual-explanation?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Missed the previous lesson? https://www.khanacademy.org/math/algebra2/polynomial_and_rational/quad_formula_tutorial/v/discriminant-for-types-of-solutions-for-a-quadratic?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! Uploaded 05-03-07 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 II channel: https://www.youtube.com/channel/UCsCA3_VozRtgUT7wWC1uZDg?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Thursday · 4 min

    Quadratic equation from geometric context | Algebra 1 (IM® v.360 aligned) | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/algebra-1-illustrative-math/x6418b49dfbc9d0c9:quadratic-equations-part1/x6418b49dfbc9d0c9:finding-unknown-inputs/v/quadratic-equation-from-geometric-context Uploaded 23-08-26 Write a quadratic equation from a situation and interpret what a solution means in context. 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" Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Thursday · 12 min

    Level 2 Addition

    Adding a 2 digit number to a 1 digit number. Introduction to carrying. More free lessons at: http://www.khanacademy.org/video?v=27Kp7HJYj2c Uploaded 10-03-07 Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Thursday · 38 min

    How to Keep Your Child Learning and Happy! at Home

    Parents, are you looking for ways to keep your young children (ages 2-7) engaged in learning while at home? Join us for a fireside chat with Caroline Hu Flexer, CEO and Co-Founder of Khan Academy Kids, and Renee Scott, an Early Education Program director at Stanford University. Caroline and Renee cover some easy ways to boost learning throughout the day. They also discuss how to incorporate key language, literacy, numeracy, and social emotional skills into everyday activities and play. And, you’ll likely be surprised that you’re already doing some of these brain boosting activities. Uploaded 16-09-20 View the webinar handout here: https://khankids.zendesk.com/hc/en-us... View our Weekly Planner here: http://khan.co/KhanKids-WeeklyPlanner Learn more about Khan Academy Kids, our free educational app for children ages 2-7 at http://www.khankids.org. Download now! http://khan.co/KhanKids-YT-Google http://khan.co/KhanKids-YT-Apple http://khan.co/KhanKids-YT-Amazon Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Thursday · 5 min

    Choosing an appropriate domain for a quadratic function | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/algebra-1-illustrative-math/x6418b49dfbc9d0c9:quadratic-functions-intro/x6418b49dfbc9d0c9:building-quadratic-functions-to-describe-situations-part-3/v/choosing-an-appropriate-domain-for-a-quadratic-function Uploaded 23-08-26 Choose an appropriate domain for a quadratic function that represents a context, and explain why it was selected. 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" Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Thursday · 10 min

    Basic addition | Addition and subtraction | Arithmetic | Khan Academy

    Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/arithmetic-home/addition-subtraction/basic-add-subtract/v/basic-addition Uploaded 10-03-07 Introduction to addition. Multiple visual ways to represent addition. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/e/addition_1?utm_source=YTdescription&utm_medium=YTdescription&utm_campaign=YTdescription Watch the next lesson: https://www.khanacademy.org/math/arithmetic/addition-subtraction/basic_addition/v/basic-subtraction?utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Arithmetic on Khan Academy: So you're ready to have some arithmetic fun? You've come to the right spot! It's the first "official" math topic and chalked full of fun exercises and great videos which help you start your journey towards math mastery. We'll cover the big ones: addition, subtraction, multiplication, and division, of course. But we don't stop there. We'll get into negative numbers, absolute value, decimals, and fractions, too. Learning math should be fun, and we plan on having some with you. Ready to get started? 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 Subscribe to KhanAcademy’s Arithmetic channel: https://www.youtube.com/channel/UCFlJkgTNeC-FYYIQnyE5yzQ?sub_confirmation=1 Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy Learn more about your ad choices. Visit megaphone.fm/adchoices

Showing 141–147 of 147 episodes