Can you think of some more advantages of peer interaction and child-to child learning?
If you agree that children learn a lot from each other, then how can we maximise such opportunities? The important thing is that these interactions should be informal, joyful and non-threatening. Just telling a child to teach another, by such statements as "Why don't you teach your neighbour/friend/brother/sister this?", doesn't usually work. This is because the child-tutor then tries to ape the adult, and the learner becomes as defensive as with an adult.
To set up a child-to-child learning situation that natural, and therefor6v, productive, is not very easy. Maybe, one should watch children, without their knowing, and see how they naturally interact. This may give us an idea of how to simulate peer-learning in the formal classroom.