Khan Academy is a website offering thousands of free educational videos on a lot of different subjects: Mathematics, Science, History, Economics, Astronomy, Art history and a lot more! The Wikipedia article of Khan Academy has more details on what it is exactly.
The videos are available on their website where you can (optionally) log in, this will give you some features like tracking what you have watched, commenting, asking questions to other people and doing tests and when you pass them successfully, the website will skip videos that you do not need to watch because you have understood a specific subject well. When you use their website, the team behind Khan Academy also track what you are doing so they can improve their website. There is no doubt that by using their website you can learn faster than if you download and watch all the videos on your computer.
However, for various reasons it might be best to download them. To share with people who do not have access to the internet is one of the main reason.
How to download the videos
Download a torrent software, many are available. If you do not know what bittorrent is, first read the Torrents 101: How Torrent Downloading Works article. One torrent software that is free and open source is Deluge. Available for Windows, OS X and Linux. Install it, open it, click on File > Add Torrent > File and select the torrent file that is posted at the top of this page.
Information on the torrent
The torrent is available at all times. It is extremely well organized with descriptive titles. We recommend using the free and open source VLC Media Player to play them.
Here’s a preview of some of the videos and how they are organized.
Arts and humanities/03 US History/10 Surveys of history/004 US History overview 3_ WWII to Vietnam.mp4 Arts and humanities/09 Art History/03 Special topics - Creating and conserving/055 Contemporary Art Conservation at Smithsonian's Hirshhorn Mus.mp4 Arts and humanities/09 Art History/74 Art of Asia - Korea/004 Ewer with lid.mp4 Arts and humanities/10 Storytelling/02 Pixar in a Box - The art of storytelling/005 World and character.mp4 Arts and humanities/16 Partners - The British Museum/05 The Middle East/005 The Mahmal.mp4 Arts and humanities/18 Partners - The J. Paul Getty Museum/01 The J. Paul Getty Museum/024 Pair of chests, attributed to Antonio Maffei.mp4 Arts and humanities/22 Partners - Wireless Philosophy/01 Critical thinking/011 Fundamentals_ Implicit Premise.mp4 Arts and humanities/22 Partners - Wireless Philosophy/02 Metaphysics and epistemology/024 Theory of Knowledge_ Analyzing Knowledge _3 (Causal and Reli.mp4 College, careers and more/01 College admissions/04 Applying to college/007 Avoiding common admissions essay mistakes.mp4 College, careers and more/02 Careers/09 Design, create, perform/010 Composer_ What I do and how much I make.mp4 Economics and finance/01 AP Macroeconomics/02 Economic indicators and the business cycle/008 Expenditure approach to calculating GDP examples.mp4 Economics and finance/01 AP Macroeconomics/03 National income and price determination/006 Long-run aggregate supply.mp4 Economics and finance/05 Finance and capital markets/06 Stocks and bonds/026 More on IPOs.mp4 Math/14 Algebra basics/05 Systems of equations/009 Systems of equations with elimination_ potato chips.mp4 Math/15 Algebra I/01 Algebra foundations/002 Abstract-ness.mp4 Math/19 Statistics and probability/05 Exploring bivariate numerical data/045 Calculating R-squared.mp4 Math/23 Differential Calculus/06 Parametric equations, polar coordinates, and vector-valued functions/017 Worked example_ differentiating polar functions.mp4 Math/29 Multivariable calculus/02 Derivatives of multivariable functions/026 Curvature formula, part 5.mp4 Math/29 Multivariable calculus/03 Applications of multivariable derivatives/021 Finishing the intro lagrange multiplier example.mp4 Science and engineering/01 Physics/10 Thermodynamics/027 More on entropy.mp4 Science and engineering/06 Organic chemistry/11 Carboxylic acids and derivatives/008 Carboxylic acid nomenclature and properties.mp4 Science and engineering/07 Biology/23 Ecology/025 The water cycle.mp4 Science and engineering/09 AP Biology/09 Worked examples of AP Biology free response questions/008 6a-c, Population ecology.mp4 Science and engineering/11 Electrical engineering/07 Home-made robots/068 LED eyes.mp4 Science and engineering/12 Health and medicine/01 Human anatomy and physiology/006 Thermoregulation in the circulatory system.mp4 Science and engineering/12 Health and medicine/03 Circulatory system diseases/018 What is a stroke_.mp4 Science and engineering/12 Health and medicine/03 Circulatory system diseases/069 Atrial fibrillation (Afib).mp4 Test prep/01 SAT/03 SAT Reading and Writing practice/015 Writing_ Concision, style, and tone - Harder example 1.mp4 Test prep/06 MCAT/05 Biomolecules/118 Fatty Acid Oxidation - Part II.mp4 Test prep/06 MCAT/13 Society and culture/009 Rational choice-exchange theory.mp4
2020-05-15 Total of 10222 vieos, 91167 MBs, 1160 hours 2019-03-25 Total of 10096 videos, 114848 MBs, 1154 hours 2017-07-17 Total of 10807 videos, 109920 MBs, 648 hours 2015-07-29 Total of 11136 videos, 119067 MBs, 1301 hours 2015-01-25 Total of 10136 videos, 107613 MBs, 1181 hours 2014-01-25 Total of 6694 videos, 63081 MBs, 817 hours 2013-05-08 Total of 4567 videos, 44351 MBs, 627 hours 2013-01-29 Total of 3883 videos, 38257 MBs, 549 hours 2012-03-28 Total of 3029 videos, 51030 MBs, 466 hours 2011-10-27 Total of 2683 videos, 44760 MBs, 414 hours 2011-08-09 Total of 2523 videos, 41575 MBs, 392 hours 2011-05-06 Total of 2062 videos, 17198 MBs, 325 hours 2010-12-10 Total of 1732 videos, 29708 MBs, 292 hours 2010-10-28 Total of 1618 videos, 26484 MBs, 273 hours
How do I only download specific videos?
One of the most useful feature with torrents is that you can download just what you need. Every torrent software has this option. In Deluge, click on your torrent and look at the Files tab at the bottom, you can right-click on folders and select “Do not download”.
When will a new torrent file be released with new videos?
There is no release date. This torrent is voluntary work so it happens only when we find the time to make a new one.
A new torrent is out, can I download it over the old torrent I had so as to save bandwidth?
Khan Academy regularly change the structure, folder names and filenames so it is better to delete everything and start downloading the new torrent.
Why is some filenames of video cut-off?
Windows filesystem, unfortunately, has a limit of around 255 characters for the complete path with the filename. So we have implemented a limit of around 200 characters for the path and the filename of each videos. The remaining 55 characters is left for the path that the user will download the torrent (i.e. C:\Users\name\Downloads).
How do subtitles work exactly?
A subtitle file, which has an extension .srt, is just a text file containing all the subtitles of a video. To be able to use it, the subtitle file must have the exact same filename as the video and be in the same folder as the video. By just opening the video with VLC Media Player, it will automatically read the subtitle file.
To copy the subtitles files in the same folder as the videos, unzip the language you would like from the Subtitles folder and just copy all the folders of your language into the folder video so as to merge them. It will place all the subtitles files in the right folder. Note that there isn’t subtitles files for every video. Unfortunately, not all videos are translated.