This document discusses evaluating and designing materials for language teaching. It provides tips for evaluating existing materials by objectively matching needs and available solutions. If existing materials do not meet needs, designing new materials may be necessary. An effective materials design model includes input, content focus, language focus, and tasks to provide a coherent framework leading learners to a communicative goal. When designing materials, teachers should consider learner and teacher needs, provide models for language use, and create coherence across units relating to the course syllabus. The document advises evaluating existing materials first before deciding to create new ones.