This document is the third edition of the textbook "Techniques and Principles in Language Teaching" by Diane Larsen-Freeman and Marti Anderson. It discusses various language teaching methods and approaches. The authors acknowledge feedback received on previous editions and their experience teaching methods courses. They dedicate the book to their families and remember their parents. The book contains chapters on different methods such as Grammar-Translation, Direct Method, Audio-Lingual Method, Silent Way, Desuggestopedia, Community Language Learning, Total Physical Response, Communicative Language Teaching, Content-based Instruction, Task-based Language Teaching, and the Participatory Approach. It also includes chapters on learning strategies, cooperative learning, technology in