siregar, Mufidah Armindy, Samsudin Siregar, Yosevin Silaban, and Lola Indriani Siregar. 2024. “Tantangan Guru Pjok Dalam Pembelajaran Abad Ke-21 Challenges for Physics Teachers in 21st Century Learning”. Cendikia: Jurnal Pendidikan Dan Pengajaran 2 (11):285-89. https://jurnal.kolibi.org/index.php/cendikia/article/view/3854.