Hi 20leunge, I have moved your message to Content request and feedback, as you had posted it under New feature requests. It looks like the troubleshooters are aware of the math issue. Last time I heard they discussed implementing a way to inform students where to find the information without changing the videos, which is quite cumbersome.

I cannot see that they are aware of the History question issue, though. Do you have an url to the page with the question, and to the page where the answer is found?

Thanks for responding. For the US history section, the practice: "https://www.khanacademy.org/humanities/us-history/precontact-and-early-colonial-era/old-and-new-worlds-collide/e/old-and-new-worlds-collide" should ask questions about the material in its section, which is Old and new worlds collide. It does, but also includes questions that involve topics taught in the next section, which is Spanish colonization. One of the questions is: "When the Spanish colonized the Americas, they utilized the encomienda system, in which colonial settlers", but the encomienda system is not taught until the next video.

Thanks, I've reported the issue on, Internal ticket 368506939046439.

I had this same problem in Chemistry!!!

There is actually quite a bit of it in Algebra, Trigonometry and now I see it in statistics. I went trough the whole unit using medians, meads and modes never learning about it! Now I see it all being taught in the next unit.