This document discusses key issues in language teaching and learning, including teachers' roles, beliefs about how learners learn, and the impact of new technologies. It addresses theories such as communicative language teaching, androgogy versus pedagogy in adult learners, transmission versus interpretation in tutoring, and Krashen's natural approach. Frameworks for constructivist language learning and Lewis' lexical approach are also examined. The document argues online tools can enhance teaching if used appropriately but may also change teaching practices.