Farida. “Implementation Of A Portfolio-Based Learning Model To Improve Mathematics Learning Outcomes Of Primary School Students: Indonesia”. Al-Mafahim: Jurnal Pendidikan Guru Madrasah Ibtidaiyah 3, no. 1 (February 28, 2020): 1-7. Accessed November 5, 2024. https://ejournal.stit-alkifayahriau.ac.id/index.php/almafahim/article/view/90.