G. Timbola, Mursalin, and A. H. Odja, “Developing Differentiated Learning Devices to Heighten Student Learning Outcome on Light Concepts at SMP Negeri 1 Kwandang”, jhsss, vol. 5, no. 6, pp. 65–71, Jun. 2023, doi: 10.32996/jhsss.2023.5.6.7.