Febriana, Tantri, and Endang Indarini. 2020. “Komparasi Pembelajaran Problem Based Learning (PBL) Dan Problem Solving Terhadap Kemampuan Berpikir Kritis Matematis Siswa Sekolah Dasar”. Jurnal Basicedu 4 (4):1016-20. https://doi.org/10.31004/basicedu.v4i4.494.