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Khan Academy is a nonprofit organization that offers free, personalized, and standards-aligned learning for math, grammar, science, history, and more. Learn with Khanmigo, a tutor powered by GPT-4, or join as a teacher, learner, or district partner.
Khan Academy offers free, world-class education to anyone, anywhere. Learn math, science, arts, humanities, and more with interactive exercises, videos, and tests.
Khan Academy offers courses on various topics of math, from early math review to calculus, for different grade levels and skill levels. You can learn math at your own pace, watch videos, practice exercises, and get personalized feedback.
Explore legacy biology content from Khan Academy, covering topics from water and acids to human biology and ecology. Learn about biology concepts, processes, and applications with videos, exercises, and quizzes.
Learn how Khan Academy was started by Salman Khan, a former hedge fund analyst and MIT graduate, in 2008. Find out how he began tutoring his cousins through videos and how the organization grew to provide free, world-class education to anyone, anywhere.
Khan Academy offers interactive and high-quality prep for every section of the digital SAT, partnering with College Board, the creators of the test. Learn more about the test format, practice with thousands of questions and videos, and get ready for test day with confidence.
Download Khan Academy apps for iOS and Android to access thousands of skills, videos, exercises, and assignments. Learn online or offline, sync your progress, and explore Khan Kids and third-party apps.
A Khan Academy é uma organização sem fins lucrativos que oferece educação gratuita de alta qualidade para qualquer pessoa, em qualquer lugar. Explore a biblioteca de matemática, ciências, português e outros assuntos, e aprenda no seu próprio ritmo com ferramentas interativas e confiáveis.
Learn about the people behind Khan Academy, a nonprofit organization that provides free online education for anyone, anywhere. Browse the profiles of content creators, software engineers, managers, and more who work on various projects and initiatives.
Learn how to find the slope of a line from a graph, a table, or two points. Watch a video and practice with examples and exercises on Khan Academy.