Methodology in language teaching has been characterized in a variety of ways. A more or less classical formulation suggests that methodology is that which links theory and practice. Theory statements would include theories of what language is and how language is learned or, more specifically, theories of second language acquisition (SLA). Such theories are linked to various design features of language instruction. These design features might include stated objectives, syllabus specifications, types of activities, roles of teachers, learners, materials, and so forth. Design features in turn are linked to actual teaching and learning practices as observed in the environments where language teaching and learning take place. This whole complex of elements defines language teaching methodology.