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“PENGARUH LKPD BERBASIS PROBLEM BASED LEARNING BERMUATAN BUDAYA BATAK TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA DI SMAN 1 AIR PUTIH”, JSSR, vol. 9, no. 3, pp. 3140–3146, Jun. 2026, doi: 10.54314/jssr.v9i3.6378.