In this brief article on the Edudemic blog, Colleen Lee explains “the power of the pair.”
I am a big fan of collaborative learning, and I think that small groups and pairs are very effective pedagogical tools.
I love the “noise” of my students learning–it’s much better than the noise of me lecturing. It’s the sound, after all, of real learning.
Wider than the Sky 
It is like that how people learn and develop the different skills they need to communicate effectively 🙂