This document provides an overview of instructional materials (IMs) for teaching English. It defines IMs and discusses their roles and functions. IMs serve as the basis for language input and practice in the classroom. They can provide specifications for content and define learner and teacher roles. The document also examines factors to consider in developing IMs, such as understanding, structuring content clearly, sequencing material appropriately, and balancing elements. Different types of IMs are described, including textbooks, workbooks, and multimedia materials.