ARDILA, Ayudita; MARZAL, Jefri; SIBURIAN, Jodion. The Development of Flipped Classroom Model Trigonometry Learning Tools improves Students’ Mathematical Communication Skills. Edumatica : Jurnal Pendidikan Matematika, [S. l.], v. 11, n. 3, p. 65–77, 2021. DOI: 10.22437/edumatica.v11i03.14497. Disponível em: https://mail.online-journal.unja.ac.id/edumatica/article/view/14497. Acesso em: 5 apr. 2025.