Despite coverage of materials development principles in the applied linguistics literature, principled production of open textbooks has not received attention. To address this gap and demonstrate the interdisciplinary potential of materials development research, the authors drew upon concurrent verbalization and interview data they collected while…

Although the ELT (English Language Teaching) materials development literature points to the influence of classroom experience on materials design, the literature is less specific about "how" such experience affects skilled textbook writing. Drawing primarily upon concurrent verbalization and pre- and post-concurrent verbalization…