SULAIMAN, Herri; FUAD NASIR; I. ROBIA KHAERUDIN. Efektivitas Lesson Study Pada Pemecahan Masalah Matematis Melalui Perkuliahan Online Di Masa Pandemi Covid 19. SJME (Supremum Journal of Mathematics Education), [S. l.], v. 5, n. 2, 2021. DOI: 10.35706/sjme.v5i2.4668. Disponível em: https://journal-fkip.unsika.ac.id/index.php/supremum/article/view/4668. Acesso em: 6 dec. 2025.