how does the description of the setting in the opening paragraphs prepare the reader for what happens in the selection?

The passage from the Dick and Jane reader puts forward a representation of idealized white middle class life. Although the race of the Dick and Jane family is never specified in the text, the pictures in the readers have always depicted rosy-cheeked and smiling white people. The house is pretty, the mother is gracious, the father big, strong, and kind: the story stands in sharp contrast to Pecola's life. The idealized and white world of the Dick and Jane story could not be farther from the truth for Pecola. As the grammar changes Morrison, in a sense, is speeding up the machinery of the Dick and Jane story to show how it does not work, how it degenerates into meaninglessness under any kind of scrutiny.... Please take a look at this and more detail at this site. Just follow the source link.