This document discusses principles of instructional materials design according to the ASSURE model. The ASSURE model provides guidance on analyzing learners, stating objectives, selecting appropriate methods, media and materials, utilizing the materials, requiring learner participation, and evaluating and revising the materials. Key aspects of the model include analyzing learner characteristics and needs, writing clear and measurable objectives, choosing materials that align with objectives and suit learners, preparing learners and environments for materials usage, and gathering feedback to improve future materials selection and design.