DEVRIM YAŞAR AKTAŞ; MERAL CANSIZ AKTAŞ. Eighth Grade Students’ Understanding and Hierarchical Classification of Quadrilaterals. Elementary Education Online, [S. l.], v. 11, n. 3, p. 714–728, 2023. Disponível em: https://ilkogretim-online.org/index.php/pub/article/view/4513. Acesso em: 5 jan. 2025.