The teacher's role in collaborative learning is to create a context in which learners can make the material their own through a process of hands-on group discovery.
Communication is the process of exchanging information and ideas.
An active process, it involves encoding, transmitting, and decoding intended messages. There are many means of communicating and many different language systems. Speech and language are only a portion of communication. Other aspects of communication may enhance or even eclipse the linguistic code. These aspects are paralinguistic, nonlinguistic, and metalinguistic.