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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
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It has produced over 10,000 video lessons [ 6 ] teaching a wide spectrum of academic subjects, including mathematics, sciences, literature, history, and computer science. All resources are available for free to users of the website and application.
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With practice exercises, instructional videos, and a personalized learning dashboard, Khan Academy empowers learners to study at their own pace, both in and out of the classroom. Covering subjects from kindergarten through early college, including math, science, reading, computing, history, art history, economics, financial literacy, SAT, MCAT ...
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30 Μαΐ 2018 · One option is: Download and install 4K Downloader (available for Windows, Mac, Linux). Copy YouTube URL of the video and paste the YouTube URL into 4KDownloader. Select the highest resolution and click download. Other options can be found by searching for recommendations online (e.g. here).
