Page:Adapting and Writing Language Lessons.pdf/410

Rh connected texts, and he still may not comprehend it completely. The study of grammar is the study of relationships, such as the contrast between and. Any relationship has at least two terms, and the student will not internalize a relationship by practicing only of its terms. This is why Cummings devices (pp. 312-327), dialogs, and other kinds of basically textual material are by themselves inadequate. This is why we need systematic practice material, both drills and exercises. The essential nature of a drill, therefore, is threefold: