How to organize online education?

Question

Video broadcast

In this situation, educational services have to be transferred online. Therefore, I would like to collect for myself and for others services that can help in organizing individual and group classes online.

What are the criteria:
1. Several connections (conference)
2. Issuance of access to certain persons
3. Chat
4. Attaching materials and links
5. Display graphs, pictures, other videos online.

Share useful services, their advantages, disadvantages and price, free trial periods.

Answer 1

bbb

Answer 2

zoom + slack

Answer 3

Contact an integrator. There are still no ready-made solutions. We'll have to pick up the pieces and figure it out. By this time it will no longer be relevant.

Answer 4

Give students good textbooks and problem books. Take exams mostly in writing.
Chats are good. But better - in the form of a forum so that students can see the questions asked by others ..