ISMAIL, I. DEVELOPMENT OF FLIP PDF E-MODULE BASED ON A SCIENTIFIC APPROACH TO IMPROVE PROBLEM SOLVING AND SPATIAL ABILITY FOR STUDENTS MIN 2 SERDANG BEDAGAI . Sensei International Journal of Education and Linguistic, [S. l.], v. 2, n. 2, p. 481–501, 2022. DOI: 10.53768/sijel.v2i2.90. Disponível em: https://www.sijel-journal.sensei-journal.com/jbo/article/view/90. Acesso em: 16 aug. 2026.