On the highest discursive level, each academic text consists of three basic elements:
Without consciously thinking about the process, you may often organize paragraphs in easily recognized patterns that give the reader a sense of logical movement and order. Discussed below are four common patterns of ordering sentences in a paragraph
Order of time
Some paragraphs are composed of details arranged in chronological order. You might, for example, explain the methodology of a certain scientific experiment by clearly saying where you began, and how you then proceeded to the next stage. For example,
To enable smoother handling of the large quantity of data, the 7-10-min long recordings were divided into 30-s segments stored as separate sound files. Each file was then processed using the speech analysis function of the program WaveSurfer (...) The next steps in the analysis were to delete from the spreadsheet program all values of zero (from unvoiced segments or silence), and all values that corresponded to errors in the pitch extraction (as evidenced by the visual inspection). Then, for each 10 s of speech, the mean and standard deviations of the pitch were calculated. Ten seconds of speech was chosen as a good unit for data analysis because it was enough time to guarantee the inclusion of a fair amount of speech at normal pausing rates.
Order of space
When your subject is a physical object, you should select some orderly means of describing it: from left to right, top to bottom, inside to outside, and so forth. For example, you might describe a sculpture as you walk around if from front to back. Compare the next two paragraphs:
Faulty spatial order:
Manhattan island contains many different sections. The predominantly black and Hispanic section of Harlem is up on one end. On the other end is the financial district, Chinatown, and Little Italy. Midtown, as the the name suggests, is in the middle, and it has Times Square and many famous theaters. Then there is the rather rundown lower Eastside, the very ritzy upper East Side, and the hip Greenwich Village. There is also Soho, which has a lot of shops and restaurants. Manhattan is an island because it is surrounded by three rivers, the Hudson, the East, and the Harlem.
Coherent spatial order:
Manhattan island contains many different sections. The island is surrounded by three rivers, the Hudson along the length of the Westside, the East about halfway up the Eastside, and the smaller Harlem River, which completes the angular shape of the northeast section. In the southeast corner of the island is the financial district, running from the island's tip up to about Canal Street af the north. To the west of the financial district are the ethnic neighbourhoods of Chinatown and Little Italy. Greenwich Village begins above the financial district and runs from Houston Street north to about 14th Street, while the area west of Broadway on this portion of the island is considered the East Village and the lower East Side. Soho, a neighbourhood of trendy shops and restaurants, is north of the village, and north of Soho begins midtown Manhattan, with its many restaurants, theaters, and the famous Times Square. Midtown is bounded on the north by Central Park, which begins at 57th Street and runs north to 110th. On both the west and east sides of the park are residential neighbourhoods of many apartment buildings, with the upper East Side being very fashionable. North of the park is the largely black and Hispanic section of Harlem.
As is obvious, the second paragraph is much longer, but it is easier to follow because the writer has used spatial arrangement, beginning with the boundaries of the island to create a sense of the whole, and then moving from south to north to chart the various sections. The first paragraph, in contrast, just lists sections randomly. Whether you are describing something as small as an object or as large as Manhattan, remember that spatial arrangement will be easier for your readers to follow and will give them a clearer sense of your topic.