Simatupang, Jonathan, Lisbet Novianti Sihombing, and Minar T. Lumbantobing. 2026. “The Effect of Project-Based Learning Models on Science Learning Outcomes of Fifth Grade Students”. Jurnal Ilmu Sosial Dan Humaniora 4 (1):359-68. https://doi.org/10.58540/isihumor.v4i1.1493.