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Gurusinga, E. Y. B.; Abi, A. R.; Juliana, J.; Sipayung, R. F.; Silaban, P. J. PENGARUH MODEL PEMBELAJARAN PROBLEM SOLVING TERHADAP HASIL BELAJAR MATEMATIKA SISWA KELAS IV SD NEGERI 101837 SUKAMAKMUR TAHUN PEMBELAJARAN 2023/2024. AQUINAS 2024, 7, 196-208.