[BlindMath] learning math accessibility

[S B]

I have two questions about learning math accessibility. First, I am
trying to use Khan accademy but I have noticed that things such as
number lines and moving numbers on number lines are not accessible
with jaws. Is this true? or are there certain keystrokes I could use.
Second, is there a way to get jaws to read math correctly on that
site. Thanks in advance.