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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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  • Today · 7 min

    Multiplying binomials with radicals | Algebra Basics | Khan Academy

    Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra-home/alg-polynomials/alg-multiplying-polynomials-by-binomials/v/multiplying-binomials-with-radicals Uploaded 24-06-11 Multiplying Binomials with Radicals. Created by Sal Khan and Monterey Institute for Technology and Education. Watch the next lesson: https://www.khanacademy.org/math/algebra-basics/quadratics-polynomials-topic/multiplying-binomials-core-algebra/v/square-a-binomial?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics Missed the previous lesson? https://www.khanacademy.org/math/algebra-basics/quadratics-polynomials-topic/multiplying-binomials-core-algebra/v/multiplying-binomials?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics Algebra basics on Khan Academy: Topics covered in a traditional college level introductory macroeconomics course 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 Macroeconomics channel: https://www.youtube.com/channel/UCBytY7pnP0GAHB3C8vDeXvg Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Today · 6 min

    Why some drivers pay more for car insurance | Financial mathematics (TX TEKS) | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/financial-mathematics-tx-teks/x647545bbd61df4a7:insurance/x647545bbd61df4a7:car-insurance-options-and-costs/v/why-some-drivers-pay-more-for-car-insurance Uploaded 30-08-26 Car insurance premiums are determined by statisticians who evaluate your accident risk based on your car type, location, mileage, driving record, and demographic data like age and gender. To lower these costs, you can choose a higher deductible, maintain a clean driving record, complete defensive driving courses, or qualify for good-student discounts. 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

  • Today · 12 min

    Algebra: graphing lines 1

    Graphing linear equations More free lessons at: http://www.khanacademy.org/video?v=2UrcUfBizyw Uploaded 25-11-06 Practice this yourself on Khan Academy right now: https://www.khanacademy.org/e/graph-from-slope-intercept-equation?utm_source=YTdescription&utm_medium=YTdescription&utm_campaign=YTdescription Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Today · 41 min

    7 Tips for Motivating Elementary School Kids During Distance Learning

    Many parents have told us that motivating their kids to stay focused and engaged during distance learning is a challenge. We're thrilled to have Kristen DiCerbo, Khan Academy’s Chief Learning Officer, tackle this topic. She shares some of the best tips to motivate elementary school kids drawn straight from educational psychology research. You can view the handout from the webinar here: http://khan.co/7TipsParentWebinar Uploaded 01-10-20 For more motivational tips and advice on distance learning, check out our distance learning guide for parents and caregivers: https://keeplearning.khanacademy.org/distance-learning-guide Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Today · 5 min

    Scam red flags | Scams and fraud | Financial Literacy | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/college-careers-more/financial-literacy/xa6995ea67a8e9fdd:scams-fraud/xa6995ea67a8e9fdd:common-scams/v/scam-red-flags Uploaded 30-08-26 Scammers often use fake links, phone calls, or a false sense of urgency regarding your accounts to trick you into sharing sensitive personal information. To protect yourself, always carefully check website URLs for misspellings, avoid clicking suspicious links, and err on the side of safety by verifying requests directly with the company. 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

  • Today · 4 min

    Bankruptcy impact | Loans and debt | Financial Literacy | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/college-careers-more/financial-literacy/xa6995ea67a8e9fdd:loans-and-debt/xa6995ea67a8e9fdd:bankruptcy/v/bankruptcy-impact Uploaded 29-08-26 While Chapter 7 and Chapter 13 bankruptcy can help resolve severe financial situations, neither option is easy nor will they cancel all types of loans. Going through either process carries lasting downsides, as it negatively impacts your credit rating for seven to ten years and can severely restrict your ability to secure loans, rent apartments, or obtain certain jobs. 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

  • Yesterday · 11 min

    Algebra: Slope and Y-intercept intuition

    Getting a feel for slope and y-intercept More free lessons at: http://www.khanacademy.org/video?v=Nhn-anmubYU Uploaded 25-11-06 Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 12 min

    Unit conversion within the metric system | Pre-Algebra | Khan Academy

    Metric unit conversion Practice this yourself on Khan Academy right now: https://www.khanacademy.org/e/converting-units?utm_source=YTdescription&utm_medium=YTdescription&utm_campaign=YTdescription Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/metric-system-tutorial/v/converting-within-the-metric-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/unit_conversion/v/speed-translation?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off! Uploaded 15-01-07 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 KhanAcademy’s Pre-Algebra channel:: https://www.youtube.com/channel/UCIMlYkATtXOFswVoCZN7nAA?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

  • Yesterday · 4 min

    Solving radical equations | Exponent expressions and equations | Algebra I | Khan Academy

    Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:eq/x2ec2f6f830c9fb89:sqrt-eq/v/solving-radical-equations Uploaded 24-06-11 Solving Radical Equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/exponent-equations/radical_equations/e/radical_equations?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson: https://www.khanacademy.org/math/algebra/exponent-equations/radical_equations/v/extraneous-solutions-to-radical-equations?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/exponent-equations/simplifying-radical-expressions/v/how-to-rationalize-a-denominator?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI 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: https://www.youtube.com/channel/UCYZrCV8PNENpJt36V0kd-4Q?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

  • Yesterday · 7 min

    Debt consolidation | Loans and debt | Financial Literacy | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/college-careers-more/financial-literacy/xa6995ea67a8e9fdd:loans-and-debt/xa6995ea67a8e9fdd:debt/v/debt-consolidation Uploaded 30-08-26 Debt consolidation is the process of combining multiple debts into a single loan, typically to simplify finances and potentially lower the total effective interest rate. 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

  • Yesterday · 9 min

    How to build car insurance coverage | Insurance | Financial Literacy | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/college-careers-more/financial-literacy/xa6995ea67a8e9fdd:insurance/xa6995ea67a8e9fdd:car-insurance-options-and-cost/v/how-to-build-car-insurance Uploaded 29-08-26 Building a car insurance policy involves picking and choosing different types of coverages to fit what you need. It helps to understand how options like liability, collision, comprehensive, and medical payments handle different situations, from fender benders to natural disasters. 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

  • Yesterday · 11 min

    Subtracting decimals (old) | Decimals | Pre-Algebra | Khan Academy

    Subtracting decimal numbers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/adding-decimals-pre-alg/e/adding_and_subtracting_decimals_word_problems?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/multiplying-decimals-pre-alg/v/intro-to-multiplying-decimals?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/adding-decimals-pre-alg/v/subtracting-decimals-word-problem?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off! Uploaded 22-01-07 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 KhanAcademy’s Pre-Algebra channel:: https://www.youtube.com/channel/UCIMlYkATtXOFswVoCZN7nAA?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

  • Yesterday · 11 min

    Algebra: Slope

    Figuring out the slope of a line Uploaded 25-11-06 Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 7 min

    Types of studies | AP Statistics | Khan Academy

    Keep going! Check out the next lesson and practice what you’re learning: https://www.khanacademy.org/math/ap-statistics/gathering-data-ap/sampling-observational-studies/v/worked-example-identifying-observational-study Uploaded 29-09-20 Sal distinguishes between experiments and observational studies, and further describes types of observational studies: retrospective, prospective, and sample surveys. View more lessons or practice this subject at https://www.khanacademy.org/math/ap-statistics/gathering-data-ap#sampling-observational-studies Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 4 min

    Balancing a budget | Budgeting and saving | Financial mathematics (TX TEKS) | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/financial-mathematics-tx-teks/x647545bbd61df4a7:budgeting-and-saving/x647545bbd61df4a7:budgeting/v/balancing-a-budget-fin-lit Uploaded 30-08-26 Analyze a budget that appears balanced but relies on savings to cover expenses. Learn why borrowing from savings can affect future budgets and explore ways to adjust spending, increase income, and pay back savings over time. 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

  • Yesterday · 6 min

    Debt counseling | Loans and debt | Financial Literacy | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/college-careers-more/financial-literacy/xa6995ea67a8e9fdd:loans-and-debt/xa6995ea67a8e9fdd:debt/v/debt-counseling Uploaded 29-08-26 Debt counseling helps people manage their money, create budgets, and make realistic plans to pay off debt over time. It’s important not to confuse this with debt settlement, which involves negotiating to pay less than the total amount owed and can have a bigger impact on your credit score. 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

  • Yesterday · 12 min

    Algebra: Slope 2

    Second part of determining the slope of a line Uploaded 25-11-06 Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 11 min

    Level 4 Subtraction

    Subtraction of multi-digit numbers involving borrowing Uploaded 22-01-07 Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 4 min

    Writing a check | Budgeting and saving | Financial mathematics (TX TEKS) | Khan Academy

    "Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/financial-mathematics-tx-teks/x647545bbd61df4a7:budgeting-and-saving/x647545bbd61df4a7:payment-methods/v/writing-a-check Uploaded 29-08-26 Writing checks might feel a little old-school, but it’s still good to know how! Some places—like a landlord or a small local business—might still ask for one. It’s a simple way to move money from your account to someone else’s, no app required. 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

Showing 1–20 of 90 episodes