About

Khan Academy is a nonprofit online course for school students. they have subjects for Math,Science,Engineering,Computing,Arts and Humanities,Economics,Test preps,College,Careers and more. Its all free they have videos how do a certain subjects and topic in that subject and teachers can use it too.you as a parent to.Its all free try it your self.
If you want to try yourself heres the link. Download the app on iOS and Android
https://www.khanacademy.org