PENGARUH PROBLEM BASED LEARNING BERBANTUAN WORDWALL TERHADAP HASIL BELAJAR DAN KEMAMPUAN BERPIKIR KRITIS SISWA KELAS XI SMA NEGERI 2 PERCUT SEI TUAN. (2026). JOURNAL OF SCIENCE AND SOCIAL RESEARCH, 9(2), 1876-1883. https://doi.org/10.54314/jssr.v9i2.6037