The document discusses materials design for English for Specific Purposes (ESP) teaching. It notes that ESP teachers spend significant time developing in-house materials to fit learners' specific needs and subjects. A good materials design model includes 4 elements: input material, language and content focus, language practice tasks, and an end communicative task. Materials should stimulate learning, guide the teaching process, and encourage language use through interesting activities. When designing materials, teachers should first select input text, consider a possible end task, check that task fits the syllabus, identify useful language from the text, develop exercises, and test and refine the materials through classroom use.