The document discusses task-based language teaching (TBLT). It provides definitions of a task and TBLT, explaining that TBLT uses tasks to engage learners in meaningful communication. The principles of TBLT are outlined, noting that it creates contexts for language acquisition, focuses on form and meaning, and develops motivation. Different types of teaching activities are discussed, including listing, ordering, comparing, problem-solving and sharing experiences. Research examples on TBLT are also mentioned.