Bahrudin and Dwi Rochmania, D. 2024. Smartphone Use For Mathematic Study In Class IV SDN Kaliwungu 1 Jombang. IJPSE Indonesian Journal of Primary Science Education. 5, 1 (Nov. 2024), 116–124. DOI:https://doi.org/10.33752/ijpse.v5i1.7943.