When I first began school, the timetable was artificially divided up into segments of time oriented around specific subject areas. By the time I was finished teaching pre-service students, we were no longer talking about subject areas but integration across them. Literacy is the key way to begin to think about integration because we always begin with one of the language modalities when we are teaching and then branch out from there. So we can use reading as a spring board to think about how WHAT we are reading relates to WHERE it fits Into the greater body of knowledge. Our minds do not think about channels but rather pictures that tie things together and make sense of the world. Integration is how that process works. We integrate the new into what is already there.