Mulyani, S. et al. 2024. Development of Video Learning Media Based on Robert Gagne’s Theory (Nine Events of Instruction) in Informatics Subjects at Junior High School. Jurnal Penelitian Pendidikan IPA. 10, 10 (Oct. 2024), 7588–7596. DOI:https://doi.org/10.29303/jppipa.v10i10.8776.