The actual places that work
Most people landing on this are either adults going back to school after a long gap or parents trying to help their kid with homework at 10pm on a Tuesday. Both situations have one thing in common: the student already feels behind. So here is where the material actually is, and which versions I end up linking every single time. Khan Academy is still the default for a reason. The course structure runs linearly from pre-algebra through college algebra and into linear algebra, and every concept has a video paired with practice problems that auto-grade instantly. It is free, it does not require an account to start, and the explanations are boring in the best possible way. You will spend about twenty minutes on a single lesson if you actually do the practice, not just watch the video. Paul's Online Math Notes at Lamar University is the other one I reach for. These are text-based notes with worked examples that look like what a professor would actually write on a board. The algebra section covers pre-algebra, algebra, and trigonometry. I prefer this when a student has already sat through a video explanation and still does not get it. The writing is dense but precise, and the examples go deeper than most video tutorials allow before they hit their time limit.
PatrickJMT on YouTube is worth bookmarking even though the channel has not been updated in years. The videos are exactly four to eight minutes long, no intro music, no personality segment, just a whiteboard and a solved problem. For algebra specifically, there are hundreds of targeted videos on factoring, quadratic equations, systems of equations, and rational expressions. If you are searching for a specific problem type, this is usually faster than sifting through Khan's playlist structure. OpenStax offers a free downloadable textbook on Intermediate Algebra. It is peer-reviewed, covers the full college algebra curriculum, and comes in PDF and web formats. I only recommend this when a student needs something reference-grade rather than tutorial-grade. The pacing is slower than a video course, but the problem sets at the end of each chapter are substantial and the answer key for selected problems is included at the back. YouTube channels like Professor Leonard and Brain Station have full semester-length lecture series uploaded as playlists. Professor Leonard's algebra series is nearly five hours of content divided into episodes, and the audio quality is good enough that you can play it while doing other work. Brain Station tends to be more compact and targets exam prep specifically. The tradeoff is that these are not interactive. You watch and you hope you understood it.
I ran into a specific issue a while back with a student who was stuck on rational expressions. Khan's exercises had her cycling through the same three problems over and over because she kept making the same sign error when combining fractions with different denominators. The platform's retry logic was actually reinforcing the mistake rather than correcting it. The workaround was to switch to Paul's Online Math Notes, find his section on rational expressions, work through the three detailed examples by hand, and then return to Khan with a written note about where the sign flip was happening. That cut the session down from two hours to maybe twenty minutes. Another thing most people miss is that algebra tutorials are rarely the problem. The problem is that students start at the wrong level. I see it constantly where someone tries to jump straight into college algebra without having clean arithmetic skills underneath it. You can watch every video in a tutorial library and still fail because you cannot factor a difference of squares without second-guessing yourself. Start with a placement test or a diagnostic quiz before committing to any full course. Khan has one built in. It takes about fifteen minutes and will tell you whether you need pre-algebra, algebra one, or algebra two. Doing this upfront saves weeks of frustration. The biggest bottleneck I have seen with free algebra tutorials is that they assume you are learning alone with no external support. If you are working through material without someone to check your work, you will not know you are wrong until you hit a practice problem you cannot solve. Writing down every step instead of doing mental math during practice is one of the most underrated habits. It forces you to slow down and makes errors visible. I also recommend taking screenshots or photos of problems you get wrong and reviewing them later. The act of stopping to photograph something makes you pay attention to it differently than just moving on.
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There are paid platforms like IXL and Aleks that provide adaptive tutoring, and they work well if you have the budget or an institution covering the cost. But for most people asking this question, the free options above cover everything you need. The material is the same whether it is on a free site or a subscription service. The difference is in the feedback loop, and you can build your own by checking answers immediately after each problem rather than waiting for a quiz score at the end of a section.
