Yarmi, G., Suntari, Y., Usman, H. and Yesi, Y. 2024. Need Analysis of Mobile Learning Based on Problem Based Learning for Elementary School Student. JTP - Jurnal Teknologi Pendidikan. 26, 2 (Aug. 2024), 507-516. DOI:https://doi.org/10.21009/jtp.v26i2.47170.