Khan academy works. We do use it. But I am looking for something that also teaches about politics, philosophy, languages etc.

Also, I want a website which teaches me (the parent) on how/what to teach to the kids. For example, Kumon at this age makes him do additions of two digit numbers with speed. I am not sure if doing things fast is what Kumon should be teaching. I am not able to get guidance on whether or not I should concentrate onspeed vs more concepts.