But yeah you need to make attempts to apply what you’re learning and answer questions on your own. You can’t simply watch problems being solved (whether by an AI or a person) and retain it.
And it's not just for math. Try it with learning to light a fire without matches. I watched the survival experts on "Alone" fail at that, and fail at building a fireplace, and fail at building bear proof food storage, fail at archery, fail at fishing, and so on. (I'm not claiming to be a survival expert, I wouldn't last a week on that show.)
No work equals no learn.