Sulaiman H, Fuad Nasir, I. Robia Khaerudin. Efektivitas Lesson Study Pada Pemecahan Masalah Matematis Melalui Perkuliahan Online Di Masa Pandemi Covid 19. supremum j of mathematics education [Internet]. 2021 Jul. 28 [cited 2026 Feb. 23];5(2). Available from: https://fkipunsika.id/index.php/supremum/article/view/4668