YULITA, Sarah; SITUMORANG, Adi Suarman; PANJAITAN, Simon M.; MANIK, Efron. Pengaruh Model Problem Based Learning (Pbl) Terhadap Kemampuan Berpikir Tingkat Tinggi Matematis Siswa Pada Soal Materi Aritmatika Sosial Di Kelas VII SMPNegeri 14 Medan T.A. 2022/2023. Innovative: Journal Of Social Science Research, [S. l.], v. 3, n. 2, p. 1022–1037, 2023. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/401. Acesso em: 9 may. 2026.