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 [Internet]. 30 Desember 2021 [dikutip 13 Agustus 2026];2(2):204-12. Tersedia pada: http://universe.ppj.unp.ac.id/index.php/universe/article/view/108