Erna Puji Astuti, Minnah El Widdah, & Heroza Firdaus. (2026). Development of 4D Model-Based Mathematics Teaching Materials on Geometry to Improve Learning Outcomes of Islamic Elementary School (MI) Students. Al-Afkar, Journal For Islamic Studies, 9(3), 1549–1556. https://doi.org/10.31943/afkarjournal.v9i3.3579