Sitorus, Acnes Monica, et al. “The Effect of Problem-Based Learning Methods and the Use of Kahoot Game Applications on Student Learning Outcomes in Grade IX Civic Education ”. Jurnal Ilmu Sosial Dan Humaniora , vol. 3, no. 4, Oct. 2025, pp. 294-05, doi:10.58540/isihumor.v3i4.1209.