Syifa UZ, Sulianto J, Watimah S. 249. Upaya Peningkatan Keaktifan dan Hasil Belajar Tematik Melalui Pendekatan Problem Based Learning Siswa Kelas II SD. psnppg [Internet]. 2023 Jul. 3 [cited 2025 Apr. 26];1(1):2210-8. Available from: https://conference.upgris.ac.id/index.php/psnppg/article/view/4316