Syaiful Adam, Alif, Tomy Andre Ansyah, Widya Rohmawati, Parno Parno, and Endang Purwaningsih. “Natural Science Visual Model Videos for Online Learning: Effect on Students’ Achievement in Constructivist Approach”. Studies in Learning and Teaching 2, no. 1 (May 31, 2021): 52-58. Accessed October 17, 2021. https://scie-journal.com/index.php/SiLeT/article/view/56.