The effect of problem-centered learning strategy on developing students’ skills in geometric decoration. Journal of the College of Basic Education, [S. l.], v. 21, n. 91, p. 793–807, 2022. DOI: 10.35950/cbej.v21i91.7369. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/7369.. Acesso em: 6 jul. 2024.