SIROJUDDIN ABROR; TSEDISO ROBERT MAKOELLE. Evaluating the Effectiveness of Outcome-Based Curriculum Implementation in Improving 21st-Century Skills Among Secondary School Students. Journal of Education and Learning Sciences, [S. l.], v. 5, n. 2, p. 60–76, 2025. DOI: 10.56404/jels.v5i2.175. Disponível em: https://jurnal.gerakanedukasi.com/index.php/gerasi/article/view/175. Acesso em: 21 dec. 2025.