I’m looking for web sites like khanacademy to refresh my mind on physics and maths in English by listening and watching videos, as a non-native speakers.
Is there anything like it that you know? Even if it bears a resemblance to khanacademy, share it please. I’ll highly appreciate.
The Open Courseware Consortium makes university-level class materials from various participants available to the public at no charge. Partner institutions include MIT and Johns Hopkins, among others. Not all content is video-based - sometimes it’s just notes or lecture slides, but it’s a great resource for an interested public.
Videos like that do get posted to YouTube, if you’re good enough at searching for them.
Maybe the physics and math sections of Academic Earth.