TIO HERIYANA; UBA UMBARA; EVAN FARHAN WAHYU PUADI. Didactical design research on mathematical sequence material in vocational high schools for job preparation. Jurnal Elemen, [S. l.], v. 11, n. 2, p. 277–296, 2025. DOI: 10.29408/jel.v11i2.27753. Disponível em: https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/27753. Acesso em: 14 jul. 2025.