Authentic materials: “Sometimes called “authentic” or “contextualized”, real-life materials are those that a student encounters in everyday life but that weren’t created for educational purposes. They include newspapers, magazines, and Web sites, as well as driver’s manuals, utility bills, pill bottles, and clothing labels.”
Martinez mentions Widdowson’s differentiation between authentic and genuine materials. Authentic materials are materials created for native speaker of the language and use in a class in its original form and design. In other words, they are not changed in any way. Whereas genuine materials are authentic materials adapted for a class, e. g. jumbled paragraphs, cut out headlines etc.