Development of Android Application Learning Media "Ruang Trigonometri" for Semester I Students of Mathematics. EduMa: Mathematics education learning and teaching, [S. l.], v. 9, n. 2, p. 1–10, 2020. DOI: 10.24235/eduma.v9i2.6660. Disponível em: https://journal1.uinssc.ac.id/index.php/eduma/article/view/6660. Acesso em: 28 may. 2026.