Sinulingga, S.P. et al. 2026. THE IMPACT OF USING INTERACTIVE VIDEO IN PROBLEM-BASED COOPERATIVE LEARNING ON STUDENTS’ COLLABORATION AND PROBLEM-SOLVING SKILLS IN JUNIOR HIGH SCHOOL. Perspektif Pendidikan dan Keguruan. 17, 1 (Jul. 2026), 80–89. DOI:https://doi.org/10.25299/perspektif.2026.vol17(1).25278.