SIMANGUNSONG, ita pratiwi; NAPITUPULU, E.; LUBIS, A.; SIMANGUNSONG, ika trisni. E-Module for Problem-Based Learning Integrating Batak Toba Culture (PBL BTC) to Improve Problem-Solving Ability. Vygotsky: Jurnal Pendidikan Matematika dan Matematika, [S. l.], v. 6, n. 2, p. 119–130, 2024. DOI: 10.30736/voj.v6i2.1038. Disponível em: https://jurnalpendidikan.unisla.ac.id/index.php/VoJ/article/view/1038. Acesso em: 27 sep. 2024.