I was just reading this article http://en.m.wikipedia.org/wiki/Learning_by_teaching.

Its such a great concept that we learn a lot better by explaining a certain concept to other people. I suppose it makes sense really, the teacher has to over prepare for a lesson to make sure they can answer any questions. There will also be a sense of responsibility which will add to the pre study process. So do you think when learning a language you could take a lesson you are working on and make it into your own lesson for other people?

What do people think about this technique? Has anyone tried?

I probably haven't given it justice with my simple explanation, maybe I need to do more research as well!