This document discusses the selection and preparation of instructional materials for teaching. It identifies different types of media resources that can be used, including audio visual, non-projected visual, projected visual, audio media, films and videos, and simulation and gaming. Some specific examples of materials provided are chalkboards, overhead projectors, slides, audio tapes, textbooks, and workbooks. The document outlines general principles for selecting instructional materials, such as choosing materials that are appropriate for the learning activities and styles of students.