This document discusses task-based language learning (TBL-TBI). It defines key characteristics of a task as something learners do using existing language resources to achieve a meaningful goal, which may involve communication between learners. There are two types of tasks: pedagogical and real-world. The document contrasts TBL with the presentation-practice-production (PPP) model, noting that TBL rejects PPP because research shows language is better learned through meaningful interaction, not controlled practice. TBL focuses on using tasks to create interaction and build language skills around task performance.