Teachers and learners alike have long struggled with the most appropriate procedures to solve the problem of the best way to learn a second or foreign language. Many theories and relevant applied methodologies have appeared during the last century all claiming to be superior to others in tackling the issue of L2 learning. Among the most fashionable and recent applications of Second Language Acquisition (SLA) theories has been task-based approach to language teaching and learning. The research-based book was set out to investigate whether task-oriented activities bear any superiority to those of more traditional evident in PPP (Presentation-Practice-Production) model in terms of grammar and writing gain of EFL learners. The book is intended to be of benefit to praticing EFL teachers as well as researchers in SLA.