Exploring the Growth of a Junior High School Student’s Mathematical Understanding and Higher-Order Thinking. Riemann: Research of Mathematics and Mathematics Education, [S. l.], v. 8, n. 1, p. 172–192, 2026. DOI: 10.38114/riemann.v8i1.164. Disponível em: https://journal.sanagustin.ac.id/index.php/reimann/article/view/164.. Acesso em: 12 may. 2026.