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. 2023;2(2):227 239. doi:10.36582/jotell.v2i2.5867