The document discusses various language teaching methodologies and asserts that teachers inherently follow theoretical principles that impact their teaching practices. It reviews several methods, including the Direct Method, Grammar-Translation, Audio-Lingual, Structural Approach, Suggestopedia, Total Physical Response, and Communicative Language Teaching, each with unique techniques and focuses. The document emphasizes the importance of practical theories and the need for continual review and testing of teaching beliefs for effective language instruction.