TITIN SURYANI; JAMILAH; RENI ASTUTI. Overcoming learning obstacles in cylinder and cone volume: A didactic design research approach. Jurnal Elemen, [S. l.], v. 11, n. 4, p. 951–965, 2025. DOI: 10.29408/jel.v11i4.31842. Disponível em: https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/31842. Acesso em: 9 nov. 2025.