- YouCubed, a project of Stanford University, has a brief (about 90 minutes, divided into 6 sessions) course for students about how to learn math. It features Stanford professor of Math Ed, Jo Boaler. It's FREE and fun and encouraging. It's well worth your time especially if you've not been exposed to ideas about growth mindset and research showing that everyone can learn math. There's a more in-depth version for teachers and parents that costs $125.
- ALEKS is my favorite resource for extensive learning, reviewing, or remediation on your own. Thousands of K-12 schools and colleges use ALEKS to supplement classroom instruction and provide self-paced math courses. One of the brilliant features of ALEKS is how learning objectives are ordered — the student is guided to learn each topic in a logical order, building from the simplest to more advanced topics. Courses go from elementary school through college algebra and precalculus. Have a look at their About page to learn how it works. Though ALEKS has animations to explain some topics, it is not based on video lectures for independent use courses (AFAIK). That means decent reading skills are required. This is a plus in my book (pun intended) — I see too many students who haven't learned how to read a math book. Those going on to math beyond high school algebra need to develop this skill.
You may be able to get a license for ALEKS through your school district; if not, licenses are available for purchase on the site for about $20 per month, with discounts for longer subscriptions or family plans.
- Khan Academy is "an organization... with the goal of ... providing a free world-class education for anyone anywhere." They have an extensive offering of courses in math, science and engineering, arts and humanities, and more, at all levels K-12 through college. Their math offerings start at early math and arithmetic and go all the way through algebra up to multivariable calculus and differential equations. I have little experience with KA myself. When I reviewed it some years ago, I found the quality of the instructional videos somewhat uneven. My sense is that it has come a long way since then.
Comparing ALEKS and Khan Academy
A very quick bit of online research tells me that (no surprise) each platform is preferred by some people. Both have extensive practice problems and ways to chart your progress. Both attempt to align with Common Core standards. KA uses instructional videos; ALEKS does not. Both offer some test prep courses. Both offer math, science, and business courses; KA also has a few arts and humanities and computer courses. ALEKS costs up to $20 per month for a private subscription. KA is free.
I'd like to hear what your experience has been with either or both of these, especially if you've done a side-by-side comparison.