My field is social studies. For those of you who don't know, or just forgot, social studies is a VERY broad field. It's composed of various subjects like history, geography, economics, politcal science, psychology, sociology, current events, etc. (I know we are asked 'how knowledge is presented in our field?' But I am assuming that "knowledge" means the same as material/information.) So since the social studies field is very widespread, there are many different ways knowledge/information is presented. I feel that in most of social studies, there is an emphasis on core-content knowledge as well.
First-hand accounts, documents, letters, fictional literature, your average history textbook format, maps, movies, and music are some of the more common ways history is presnted. The same goes for goegraphy as well, but perhaps more a little more emphasis on things that are visual. Knowledge in political science is heavily presented with govermental documents and policies. Descriptive reports, analysis, and studies are commonly presented in economics, psychology, and sociology. But music, movies, literature, and the media can play a big role in presenting knowledge in sociology also. As for current events, information is usually presented through the media (tv, print magazines/newspapers, radio, internet). In all of these sub-genres of social studies, knowledge is often presented through spoken word and conversating with people also.
I think it is great to realize the different ways knowledge is presented in social studies. There is much more to social studies than your one dimensional textbook. If you utilize the various methods of gaining knowledge, your learning experience will be more benefitial, well-rounded, and enjoyable.