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Upaya Peningkatan Hasil Belajar IPAS Melalui Penerapan Model Problem Based Learning Pada Siswa Kelas IV Sekolah Dasar. JCPSD [Internet]. 2026 Jun. 1 [cited 2026 Sep. 14];2(1):44-53. Available from: https://jcpsd.id/jcpsd/article/view/16