Earl W. Stevick, Adapting and Writing Language Lessons… (1971)
“ Each of nine cities was a subtopic and formed the basis of one lesson. For each subtopic, three versions ('takes') were recorded on tape. Any one lesson uses each of the three versions in a different way. In Lesson 38, which contains the first microtext, the content of the first version has been converted into very short, uncomplicated sentences. Following those sentences are two or three questions based on each. The student is to get the answers by listening to the first version. ”
