For instance, by using the Browse function you can see choose a particular publication. She went through the list of publications with us, point out certain publications and particularly news services which had good coverage of certain areas. For instance, one news service has lots of Asian coverage, so when kids need something on an Asian country you can enter that source. We had kids who had to environmental reports on pollution in the Houston Ship Channel choose the Houston Chronicle as their source, combining that with the other search terms. Unfortunately, I did not write down all the specialized coverage she told us about.
Kids use the browse function to look at subjects, too.
You have to explain to kids what the lead paragraph is and why a search confined to that is narrower than one that looks at all text. Where I used to work, we had the complete Newsbank, including Names in the News and Review of the Arts. Although the news coverage in microfiche is broader, I don't miss that like I miss Names and Review. Our kids used that a lot. Names in the News was used constantly, also the sections of Review that dealt popular TV and music.