MARIANA JIMÉNEZ ROJAS2025-08-272025-08-272025-08-27http://repositorio.uia.ac.cr/handle/123456789/4407enTHE USE OF VISUAL DIDACTIC MATERIALS AS A STRATEGY FOR ENHANCING THE RECOGNITION AND PRONUNCIATION OF LONG VOWEL SOUNDS IN ENGLISH IN SEVENTH-GRADE STUDENTS AT CTP DE PLATANARThesis