NEED ANALYSIS OF DIGITAL TEACHING MATERIALS WITH STEM APPROACH AND FLIP BOOK-FORMED TO IMPROVE SELF-REGULATED SKILLS FOR PRE-SERVICE TEACHERS. SPEKTRA: Jurnal Kajian Pendidikan Sains, [S. l.], v. 10, n. 2, p. 185–195, 2024. DOI: 10.32699/spektra.v10i2.7732. Disponível em: https://ojs.unsiq.ac.id/index.php/spektra/article/view/7732. Acesso em: 26 nov. 2025.