Task-based language teaching (TBLT) is an approach that focuses on using tasks as the core unit of planning and instruction. It was developed by N. Prabhu in the 1980s who believed students learn more effectively when focused on tasks rather than language. In TBLT, students complete meaningful tasks like ordering food or solving problems using the target language. The key principles are that meaningful communication and using language for real-world tasks promotes learning. A task is an activity requiring students to use language to achieve an outcome. TBLT emphasizes using tasks to provide opportunities for meaningful language practice and production.