This document discusses communication in the classroom and provides an overview of several instructional design models. It defines communication and describes how teaching is a communication process. It also explains Bloom's taxonomy of learning domains, including cognitive, affective, and psychomotor. Several instructional design models are outlined, including Kibler's model, the ADDIE model, and its five phases of analysis, design, development, implementation, and evaluation. Effective communication in the classroom helps students learn and benefits both students and teachers.