Azzahra A, Reinita R. Analysis of the Validity of PBL-Based Interactive Teaching Materials on Materials Respecting Diversity in Grade IV Elementary School. JES [Internet]. 2025 Sep. 5 [cited 2026 Apr. 19];9(5):377-3387. Available from: https://jes.ejournal.unri.ac.id/index.php/JES/article/view/964