Saputra, Yulian Widya, Kurniawan Kurniawan, Fitria Nurul Hidayah, and Mujahadah Mujahadah. 2023. “Needs Analysis and Design of Martapura Kingdom Numerical Teaching Materials Based on Android With the Help of I-Spring Suite for Elementary School Students in Samarinda City.”. Educational Studies: Conference Series 3 (1), 22-38. https://doi.org/10.30872/escs.v3i1.2541.