UMAR, U.; MAULYDA, M. A.; ERFAN, M.; HIDAYATI, V. R.; WIDODO, A. PROFILE OF THINKING GEOMETRY LEVELS OF PGSD STUDENT PROGRAMS BASED ON VAN HIELE THEORY. Integral : Pendidikan Matematika, [S. l.], v. 11, n. 1, p. 33–41, 2020. Disponível em: https://e-journal.umc.ac.id/index.php/JNR/article/view/1181. Acesso em: 29 mar. 2024.