THE EFFECTIVENESS OF QUIZIZZ TO IMPROVE STUDENTS’ VOCABULARY : A CASE STUDY OF 7th GRADE AT SMPN 14 SEMARANG. JEELL [Internet]. 2025 Oct. 18 [cited 2026 Jan. 31];12(3):225-34. Available from: http://jeell.upjb.ac.id/index.php/files/article/view/98