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Batubara, S., Panjaitan, M.B. and Pasaribu, E. 2025. The Influence of Problem Based Learning Model on Students’ Critical Thinking Skills in Natural and Social Sciences Subject of Class V UPTD SD Negeri 122379 Pematangsiantar. Jurnal Riset Ilmu Pendidikan. 5, 3 (Sep. 2025), 670–676. DOI:https://doi.org/10.56495/jrip.v5i3.1283.