Rahmwati D, Nurcahya I. Efektivitas Problem Based Learning dalam Meningkatkan Pemahaman Konsep Matematika di Sekolah Dasar . karimahtauhid [Internet]. 2025 Sep. 4 [cited 2026 Jun. 8];4(9):6516-27. Available from: http://103.127.96.46/index.php/karimahtauhid/article/view/20377