ARIVINA, Aulia Nur; JAILANI, Jailani. Development of trigonometry learning kit with a STEM approach to improve problem solving skills and learning achievement. Jurnal Riset Pendidikan Matematika, [S. l.], v. 7, n. 2, p. 178–194, 2020. DOI: 10.21831/jrpm.v7i2.35063. Disponível em: https://jurnal.uny.ac.id/index.php/jrpm/article/view/35063. Acesso em: 8 jun. 2025.