There is a wrong with math contents in Khan English Channel.
You skipped many articles.
For example see this link in official website
There is a article named Intro to multiplication
And see this link in Kolibri
I can’t see it.
There are many articles skipped like this example.
Something else, math videos come in low quality and resolution, Could you make them in medium quality and resolution?
I hope you fix that soon.
see these screenshots
The missing article in official website