2023. IMPROVING STUDENTS VOCABULARY MASTERY BY USING WORD WALL MEDIA AT SMP NEGERI 3 TONDANOIMPROVING STUDENTS VOCABULARY MASTERY BY USING WORD WALL MEDIA AT SMP NEGERI 3 TONDANO. JoTELL : Journal of Teaching English, Linguistics, and Literature. 2, 2 (Mar. 2023), 227 239. DOI:https://doi.org/10.36582/jotell.v2i2.5867.