Children learn a second/foreing language easier than adults.
I think this sentence or assumption it is rigth, children are like an sponge, they can absorb what ever you teach them, that is very impressive, and also it is a good tool to give them more knowledge about the foreing language that they are learning about.
According what we saw in class, after puberty (critical age), brain loses its flexibility and this makes it difficult for an adult to acquire a language like a native.
I was reading an article about this statement, and I found some very interesting ideas, for example:
"Children are much quicker at learning a foreign language because their brains are still forming and accept new information much easier"
Another quote that I found very interesting was:
" When children are taught a foreign language at an early age, they learn in a method that works for their brains, and many language learning programs are trying to replicate this learning process".