“KESULITAN PEMBELAJARAN DARING PADA MATA PELAJARAN MATEMATIKA MATERI TRIGONOMETRI SISWA SMK NEGERI 1 SURABAYA” (2022) Journal of Mathematics Education Research, 1(2), pp. 15–21. Available at: https://journalng.uwks.ac.id/jmer/article/view/35 (Accessed: 22 November 2024).