LISA APRISILIA MAURU; HAROL REFLIE LUMAPOW; DEYSTI TRIFENA TARUSU. Optimalisasi Hasil Belajar IPAS Berbasis Project Based Learning: Penelitian Tindakan Kelas pada Siswa Kelas IV SD GP Berea Tondano. JURNAL RISET RUMPUN ILMU PENDIDIKAN, [S. l.], v. 5, n. 1, p. 831–843, 2026. DOI: 10.55606/jurripen.v5i1.8670. Disponível em: https://prin.or.id/index.php/JURRIPEN/article/view/8670. Acesso em: 2 may. 2026.