Lamtiur, I. Y. (2025). Development of a PBL Based E-Module for Reaction Rate Material with Integration of Batak Toba Local Wisdom Dekke Naniura. EduMatSains : Jurnal Pendidikan, Matematika Dan Sains, 10(2), 257–272. https://doi.org/10.33541/edumatsains.v10i2.7366