Yasinia, A.R. , Rahmawati, I.D. dan Wulandari, R. 2025. IMPROVING LEARNING OUTCOMES ON THE CONCEPT OF SUBSTANCE FORMS AND THEIR CHANGES THROUGH THE ’FRIENDLY AND HEALTHY SOAP’ EXPERIMENTAL METHOD AND ROLE PLAYING METHOD: EXPERIMENTAL STUDY ON ELEMENTARY SCHOOL STUDENTS. Jurnal Ilmiah Pendidikan Dasar (JIPDAS). 5, 2 (Mei 2025), 1349–1359. DOI:https://doi.org/10.37081/jipdas.v5i2.2812.