it is a book which talks about the task-based approach to language teaching methodology, in which David Nunan has introduced the principles of this approach and the shift from communicative language teaching to this method, by tackling to the notion of task, its meaning, and its components, and moving to the ways of grading and sequencing the tasks, in addition to how to assess and evaluate the tasks.
it is very useful and helpful for teachers all over the world as this is a new pedagogy to be adopted or adapted to meet the needs of different groups of learners, it raises teachers' awareness about the usefuleness of tasks in the classroom and the inegration of real-life tasks into teaching practices to achieve both text and task authenticity , all of which help the learners to develop the communicative, strategic, and socioliguistic competenecs