This unit of instruction is one of a series of materials developed by the Comprehensive Vocational Teacher Education Program for the Mississippi ARC (Appalachian Regional Commission) Region to provide teacher educators, vocational directors, teachers, and others with basic instructional material needed to guide and assist inservice vocational teachers in improving professional teaching competencies. This unit on effective classroom communication contains lesson plans, instructional materials, teaching aids, transparency masters, evaluation instruments, and references needed to conduct a minimum of 3 hours of inservice training on the subject. The two lesson plans contained in the unit include student learning objectives, materials and equipment needed, introduction, learning activities with suggested dialogue, application (drill, illustration, questions, participation in discussion, and so forth), evaluation, and summary. Directions for using this instructional inservice unit are included in the package. (KC)