Aulia IM, Prayitno S, Lu luilmaknun U, Sridana N. Analysis of students spatial ability in solving problems of flat side space subjects based on van hieles level of thinking . J. Pijar.MIPA [Internet]. 2023 Jan. 30 [cited 2024 Nov. 22];18(1):36-41. Available from: http://jurnalfkip.unram.ac.id/index.php/JPM/article/view/3186