Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Khan Academy Videos

  1. Feb 14, 2009 #1
    I'm wondering if anyone else has came across this site, its covers a wide range of maths topics and some physics as well. The lessons are in a video format and are hosted on Youtube.
    http://www.khanacademy.org/" [Broken]
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Feb 14, 2009 #2
    I have just looked at a couple of them.Good stuff.
  4. Apr 9, 2009 #3
    they are awesome
  5. Apr 10, 2009 #4
    I stumbled upon them as well. There were some really helpful video's. Difficulty ranges from easy (simple arithmetic) to, I'd say, quite advanced (differential equations etc).
  6. Nov 10, 2009 #5
    Khan is the best. I've been watching him for a year now... He's doing Biology, chemistry, finance, etc... He also made it on CNN by being known for his teaching ability on youtube
  7. Nov 24, 2009 #6
    Yes, this contains really helpful videos covering a variety of topics in math and sciences such as physics, chemistry and biology.
  8. Nov 24, 2009 #7


    User Avatar

    I found the site earlier this year when doing a research paper on Genghis Khan. Khan Academy is definitely one of the best "tutoring" sites on the net and they are constantly updating the site with new lessons on an assortment of topics.
  9. Dec 13, 2009 #8
    Wow.... Thank you very much for shearing this! :-)
  10. Dec 13, 2009 #9
    Great great stuff, highly recommended for everybody. This is how I learned calculus and I can effectively apply calculus to numerous problems now.
  11. Dec 15, 2009 #10
    Very, very nice. I've been looking for a resource like this forever.
  12. Dec 17, 2009 #11
    Oh that's great . very good stuff. i am going to pass it on to my friends .
    i have never come across like this.
  13. Dec 30, 2009 #12

    Char. Limit

    User Avatar
    Gold Member

    Sorry to revive a twelve-day-old thread, but I want his to be brought up again.

    Khan Academy is easily one of the best learning resources online. It is the reason I know about partial derivatives, gradients, and double integrals. I'm looking into differential equations now, and Salman Khan explains it in such a way that I immediately see what he says.

    Definitely worth mentioning.
  14. Jan 2, 2010 #13
    This is a fabulous resource!!
  15. Jan 19, 2010 #14
    This is where I learned calculus from last month. After a bit more practice, on to differential equations!
  16. Feb 2, 2010 #15
    Personally, this site was awesome for everything up to calculus. I mean, this site changed my life for the clarity of all of the math on it, but the calculus stuff just wasn't adequate.

    I couldn't do related rates problems after watching these videos, I got very confused by limits & didn't realise how simple they were (in the calculus sense - although the epsilon-delta explanation is brilliant) and a few more issues.

    If you want a comparison, watch some of the videos on this site & compare/contrast the level of difficulty.


    Especially the related rates problem on this one, I mean it still scares me...

    That said, I'll always tell people I really went to university @ KhanAcademy :p
  17. Feb 2, 2010 #16
    I found khanacademy to be pretty good for calculus. After a good amount of worksheets, I was able to do about 3/4 of the BC Calculus exam in my head(and I'm a very slow minded person) but I'm very disappointed that he didn't talk about differentiating or integrating parametric or polar equations, which are pretty big parts of them.

    The link you gave is a very good resource for single variable calculus. I'm watching the video on polar coordinates and it's gonna be fuuuun!
  18. Feb 2, 2010 #17

    Char. Limit

    User Avatar
    Gold Member

    I actually find related rates and optimization the toughest part of single-variable calculus.
  19. Feb 2, 2010 #18
    Those problems are insanely hard....

    Until you realise the derivative is always with respect to time, (always resulting in an implicit differentiation)....

    Most of the time you are using the Pythagorean theorem or something like the radius/volume.

    That knowledge, to look for what is changing with time & what is the geometrical shape that is varying is really all you need, well that's all I've seen in single variable :redface:
  20. Feb 4, 2010 #19
    Great find! This site has 4 of my 6 courses in it! I am stoked, thanks!
  21. Feb 27, 2010 #20
    Yes. This website is very good!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook