This document discusses characteristics of adult language learners and suggestions for improving language teaching materials for adults. It notes that adults have more life experience, more immediate needs, and expect to be treated as mature. It suggests that materials for adults should use adult themes, roles, and language, rather than focusing solely on native speakers. It proposes reflecting the situations and language of second language users, not just native speakers. Finally, it suggests methods can go beyond 19th century principles, such as incorporating the first language more and emphasizing written language.