ZAINIL, M. .; KENEDI, A. K. .; ANITA, Y. .; MARDIN, A. .; YULISTINA, N. . Development of measurement instruments for 21st century skills of elementary school students based on the STEAM approach: A study of validity and reliability. International Journal of Innovative Research and Scientific Studies, [S. l.], v. 8, n. 9, p. 40–50, 2025. DOI: 10.53894/ijirss.v8i9.10608. Disponível em: https://ijirss.com/index.php/ijirss/article/view/10608. Acesso em: 5 dec. 2025.