methodology in education, focusing on the creation, evaluation, and application of educational materials, particularly textbooks for teaching specialized English. The author explores the theoretical foundations, methodological approaches, and practical implications of design-based research, highlighting its potential to bridge the gap between educational theory and practice. The work includes a comprehensive study of textbook development and assessment, involving feedback from teachers and students. It is intended for educators, researchers, and students interested in educational research and the development of effective teaching tools. |