SARJANA, K.; KERTIYANI, N. M. I. .; HAYATI, L.; BAIDOWI, B. Developing instructional props to reinvent the area of parallelogram and triangle in online learning. Beta: Jurnal Tadris Matematika, [S. l.], v. 16, n. 1, p. 1–13, 2023. DOI: 10.20414/betajtm.v16i1.555. Disponível em: https://jurnalbeta.ac.id/index.php/betaJTM/article/view/555. Acesso em: 25 jun. 2024.