# Is there a good math study site online. **URL:** \ **Category:** Factual Questions\ **Created:** [December 3, 2010, 3:31am UTC](https://boards.straightdope.com/t/is-there-a-good-math-study-site-online/562757 "2010-12-03T03:31:36Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Quasimodal](https://avatars.discourse-cdn.com/v4/letter/q/57b2e6/32.png) [@Quasimodal](https://boards.straightdope.com/u/Quasimodal)\ **Post date:** [December 3, 2010, 3:31am UTC](https://boards.straightdope.com/t/is-there-a-good-math-study-site-online/562757/1 "2010-12-03T03:31:36Z")
As many know, I am trying to go back to school. I will need to brush up on my high school math if I am going back to school. I did well enough in high school, doing all my maths and earning an 80% average, but it’s been over 10 years, so of course my skills are a little rusty. I’d rather not pay an online university to redo my high school maths, I probably could study it well enough on my own. Is there a good method book or websites that would cover all of my math to prep me for a return to the university world? I would need to know things like quadratics, binomials, matrices, triginometry, etc. I’m in Canada so I guess the equivalent here is Math C30. ---
**Author:** ![MobiusStripes](https://avatars.discourse-cdn.com/v4/letter/m/d6d6ee/32.png) [@MobiusStripes](https://boards.straightdope.com/u/MobiusStripes)\ **Post date:** [December 3, 2010, 3:33am UTC](https://boards.straightdope.com/t/is-there-a-good-math-study-site-online/562757/2 "2010-12-03T03:33:26Z")
Try the Khan Academy. > **[Khan Academy | Free Online Courses, Lessons & Practice](https://www.khanacademy.org/)** > > 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. ---
**Author:** ![friedo](https://avatars.discourse-cdn.com/v4/letter/f/8edcca/32.png) [@friedo](https://boards.straightdope.com/u/friedo)\ **Post date:** [December 3, 2010, 3:50am UTC](https://boards.straightdope.com/t/is-there-a-good-math-study-site-online/562757/3 "2010-12-03T03:50:00Z")
Khan Academy is excellent, and has things conveniently organized by topic. If you like his videos, I also recommend [Derek Owens](http://www.youtube.com/user/derekowens#p/a) who also has a growing library of math and physics videos in a similar style (but with a little planning put into them.) Another good resource is [Wolfram Alpha](http://www.wolframalpha.com/), which can show you the solution plus steps to a wide variety of algebra problems, in case you get stuck and need a clue. ETA: With all that said, if you need to brush up, I strongly recommend you get a textbook with a large set of problems to practice with. Over the summer I had a re-learn a lot of algebra and pre-calc to get placed into calculus this year, so I bought a College Algebra textbook and worked through a lot of the problems. It was money well spent. ---
**Author:** ![friedo](https://avatars.discourse-cdn.com/v4/letter/f/8edcca/32.png) [@friedo](https://boards.straightdope.com/u/friedo)\ **Post date:** [December 3, 2010, 3:57am UTC](https://boards.straightdope.com/t/is-there-a-good-math-study-site-online/562757/4 "2010-12-03T03:57:52Z")
Another good resource for asking math questions is the [Mathematics Stack Exchange](http://math.stackexchange.com/). They have a growing library of questions from very elementary to advanced-level stuff. Plus if you want to ask questions there you get to practice your TeX sk1llz. ---
**Author:** ![Animastryfe](https://avatars.discourse-cdn.com/v4/letter/a/8797f3/32.png) [@Animastryfe](https://boards.straightdope.com/u/Animastryfe)\ **Post date:** [December 3, 2010, 4:04am UTC](https://boards.straightdope.com/t/is-there-a-good-math-study-site-online/562757/5 "2010-12-03T04:04:47Z")
I highly recommend the Khan Academy. Also, [common errors in college mathematics](http://www.math.vanderbilt.edu/~schectex/commerrs/) and [books for learning math and physics](http://math.ucr.edu/home/baez/books.html).