Harnita, Rismiyanto and Sumaji (2022) “The Effectiveness of Problem-Based Learning Model Towards Students’ Learning Outcomes of Natural Science Class V Elementary School in Gugus Gajah Mada Sub-District Bonang, Demak Regency”, Uniglobal Journal of Social Sciences and Humanities, 1, pp. 29–35. doi: 10.53797/ujssh.v1sp.5.2022.