YUGNI MAUDY, S.; RULI, R. M. Didactical design of the proportionality concept based on anthropological theory of the didactic. Beta: Jurnal Tadris Matematika, [S. l.], v. 18, n. 1, p. 21–48, 2025. DOI: 10.20414/betajtm.v18i1.690. Disponível em: https://jurnalbeta.ac.id/index.php/betaJTM/article/view/690. Acesso em: 1 may. 2026.