Second Language acquisition and Second Lenguage Teaching

It is well known, that there are several hypotheses, or approaches, about the way people acquire a second language, and perhaps something that learning, and teaching processes have in common, is the variety of forms, whereby, both of these actions can be performed.  About the differences, between learning and teaching, it could be said, that as students, we have some freedom to choose, or recognize, our learning style, and find our intrinsical motivations, in order to succeed, in the acquisition of a second language.  On the other hand, for a teacher sometimes, trying to decipher or recognize the way a student learn, may result a difficult task to perform.  As a result of this situation, more theories are developed, changing constantly and trying to find, better ways to teach and also acquire a second language.