This document discusses reasons and strategies for teaching and developing the four main language skills: listening, reading, speaking, and writing. For each skill, it outlines key reasons for developing that skill such as listening requiring real-time comprehension and being the basis for speaking development. It also provides example strategies for teaching each skill, such as using pre-listening activities to help students understand what they will hear and implementing role-plays to provide speaking practice in a safe environment. The overall document serves to explain the importance of integrating work on all four language skills into language education.