The document discusses criteria for evaluating materials and selecting coursebooks for teaching English. It explains that criteria can be developed by brainstorming universal standards, subdividing categories, revising the list, organizing it, and specifying context-based factors. When selecting materials, the needs of both teachers and learners should be considered, as well as how the materials will be used. Coursebooks fulfill practical needs in non-English environments where teachers lack training, and they provide a structure for lessons by mapping content over time.