“THE EFFECTIVENESS OF DISTANCE LEARNING IN SCIENCE STUDENTS DURING COVID-19 AT SMPN KECAMATAN KOTO XI TARUSAN, PESISIR SELATAN DISTRICT ON UNDERSTANDING STUDENT CONCEPTS”. Universe 2, no. 2 (Desember 30, 2021): 204–212. Diakses Agustus 14, 2026. http://universe.ppj.unp.ac.id/index.php/universe/article/view/108.