Sari, Septyana Wulan, Ervina Eka Subekti, and Maslam. 2023. “63. Peningkatan Hasil Belajar Materi Waktu Melalui Model Pembelajaran Problem Based Learning Berbantuan Alat Peraga Siswa Kelas II SDN 1 Samirejo ”. Prosiding Seminar Nasional Pendidikan Profesi Guru 1 (1):570-77. https://conference.upgris.ac.id/index.php/psnppg/article/view/3976.