Oktaviani Y, Refinne F, Paryuni. 242. Peningkatan Hasil Belajar Matematika Melalui Model Problem Based Learning Kelas 1 SDN Gajahmungkur 04. psnppg [Internet]. 2023 Jul. 3 [cited 2025 Dec. 5];1(1):2155-60. Available from: https://conference.upgris.ac.id/index.php/psnppg/article/view/4308