Interactivity class

In a class online, we have a different type of interactivity than in a typical classroom environment. It's more interactive because you write directly on line on our blog also our remarks are immediatly visible with the eyes of all.
But I think that is more an individual interactivity between a student and the teacher than a really interactivity inside the class. Because the teacher speaks and just talks with a student at the same time, also the others students can't hear the conversation.
So if we want more interactivity, we must give the possibility of others students to hear the conversation and participate. I know that it will be more difficult but we can give rules : speak only for help your comrade, if only you are really not agree with him ans at the end of conversation if you have additionnal things with saying.
And we should make the same thing at home to avoid to loose time by transports and see what is really the e-learning.