Merta, I Wayan, et al. “The Effect of Project-Based Learning With the Science, Technology, and Society Approach on Digestive System Material Against the Concept Mastery ”. Jurnal Penelitian Pendidikan IPA, vol. 8, no. 6, Dec. 2022, pp. 2879-82, doi:10.29303/jppipa.v8i6.2406.