Isti Zulfa Nida, Sukamto, and Veryliana Purnamasari, “PENGARUH PROBLEM BASED LEARNING TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA KELAS III SEKOLAH DASAR”, didaktik, vol. 9, no. 2, pp. 4808 - 4818, Jul. 2023.