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Frada, T. W. .; Gunawan, G.; Untarti, R. .; Kusuma, J. W. .; Ristianto, M. .; Vertikawati, R. . APPLICATION OF PROBLEM-BASED LEARNING TO IMPROVE STUDENT MOTIVATION AND LEARNING OUTCOMES ASSISTED BY WORDWALL. MULTI RES LIT 2024, 3, 195-203.