Muna, N., Zumrotun, E. and Attalina, S.N.C. 2025. Development of 3D mock-up media for respiratory system learning in elementary schools . Indonesian Journal of Educational Development (IJED). 6, 2 (Aug. 2025), 619–631. DOI:https://doi.org/10.59672/ijed.v6i2.4762.