How are virtual boards and screens arranged in online schools?

Question

Distance learning

For example, in Skyeng, on the left is a video link between a teacher and a student, and on the right is a block where training materials are shown, and the teacher can also draw with a pencil, or flip the page and the student will also have scrolling.

How does it work and are there ready-made sample codes for studying?

Answer 1

Here, perhaps, something will come out https://habr.com/en/post/533102/