SCIENTIFIC AND METHODOLOGICAL FOUNDATIONS FOR ENSURING THE SPIRALING DEVELOPMENT OF GRAMMAR AND VOCABULARY MATERIALS IN ENGLISH LANGUAGE TEXTBOOKS. Modern American Journal of Linguistics, Education, and Pedagogy, [S. l.], v. 1, n. 8, p. 131–143, 2025. Disponível em: https://usajournals.org/index.php/6/article/view/1405. Acesso em: 28 dec. 2025.