Sulaiman H, Nasir F, Khaerudin IR. Efektivitas Lesson Study Pada Pemecahan Masalah Matematis Melalui Perkuliahan Online Di Masa Pandemi Covid 19. supremum j of mathematics education [Internet]. 2021Jul.28 [cited 2024Dec.28];5(2). Available from: https://journal.unsika.ac.id/supremum/article/view/4668