Widiastuti, Shendi Kharisma. “MODEL ON NATURAL SCIENCES SUBJECT (IPA) GRADE IV ELEMENTARY SCHOOL”. International Journal of Elementary Education 1, no. 3 (September 8, 2017): 206–218. Accessed April 4, 2025. https://ejournal.undiksha.ac.id./index.php/IJEE/article/view/11503.