RAMADHAN, M. H.; ZULKARDI, Z.; PUTRI, R. I. I. . Designing Learning Trajectory for Teaching Fractions Using PMRI Approach with a Chessboard Context. SJME (Supremum Journal of Mathematics Education), [S. l.], v. 6, n. 2, p. 162–170, 2022. DOI: 10.35706/sjme.v6i2.5866. Disponível em: https://journal.unsika.ac.id/index.php/supremum/article/view/5866. Acesso em: 7 may. 2024.