Relationship between Mathematics Teachers’ van Hiele Levels and Students’ Achievement in Geometry. International Journal of Studies in Education and Science, [S. l.], v. 4, n. 2, p. 113–123, 2023. DOI: 10.46328/ijses.61. Disponível em: https://ijses.net/index.php/ijses/article/view/2161. Acesso em: 8 jun. 2025.