New interstate highways cross our land and Illinois industry leads us toward a new age of prosperity. 30 1970-1980 Completion of the Sears Tower, the world's tallest building, is our key to the study of Chicago, one of the world's greatest cities. But in looking at a city we also see the questions that many have about city life. We discover that both are important and great Americans have come from both. In that context we look at Illinois names to know, a biographical study of people important to Illinois.
Agriculture is vital to Illinois.
As the principal theme of this issue, we use it to teach about statistics and their use. We study farm products and learn which are most important to Illinois and where they are raised. Then we spotlight the counties which are most productive. Comparing productivity enables us to examine statistical summaries and charts and study the ways in which they may be used. Making statistics visible is important and this is often done with graphs and charts like those we draw in this lesson.