Sukemi S. PENINGKATAN MINAT BELAJAR SISWA KELAS VA SD NEGERI JETIS 1 YOGYAKARTA MELALUI PROBLEM SOLVING SYSTEMATIC. JIG COPE [Internet]. 2015 Feb. 4 [cited 2025 May 15];(1). Available from: https://jurnal.uny.ac.id/index.php/cope/article/view/2930