RAHMAN, Muhammad Ridho; NURHALITA, Nora; SINDI, Sindi; HARTONO, Yusuf; DARMAWIJOYO, Darmawijoyo. Junior High School Students’ Mathematical Thinking Ability on Set Theory Material Based on the APOS Theory. Edumatica : Jurnal Pendidikan Matematika, [S. l.], v. 16, n. 1, p. 203–217, 2026. DOI: 10.22437/edumatica.v16i1.51317. Disponível em: https://www.online-journal.unja.ac.id/edumatica/article/view/51317. Acesso em: 13 may. 2026.