TANJUNG, W. A. .; SUPARNI; HASIBUAN, N. A. P. . Development and Preliminary Validation of a Problem-Based Learning–Oriented Science Assessment Instrument on Changes in the State of Matter for Grade 4 Students. Passikola: Jurnal Pendidikan Dasar & Madrasah Ibtidaiyah, [S. l.], v. 3, n. 1, p. 60–80, 2026. DOI: 10.46870/passikola.v3i2.2073. Disponível em: https://www.jurnal.stainmajene.ac.id/index.php/pgmi/article/view/2073. Acesso em: 6 sep. 2026.