BAHARUDDIN, Baharuddin. Peningkatan Pemahaman Konsep Operasi Hitung Perkalian Bilangan Cacah melalui Pendekatan Konstruktivisme. Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences, [S. l.], v. 3, n. 3, p. 89–97, 2024. DOI: 10.53696/venn.v3i3.169. Disponível em: https://journal.web.id/journals/venn/article/view/169. Acesso em: 7 oct. 2026.