This document discusses the importance of a teacher's language and communication skills. It defines language and communication, and describes the different types of language and the four components of communication. It also explains verbal, paraverbal, and nonverbal communication. The document provides tips for teachers to improve their language and communication skills, such as challenging students, speaking clearly, and using tools like paraphrasing. It emphasizes that developing these skills is a joint responsibility and provides strategies for teachers to help students improve their own language and communication abilities.