Astriani, Linda, and nabilah chairunisah. 2026. “Penerapan Model Problem Based Learning (PBL) Berbantuan Media Tangram Terhadap Kemampuan Berpikir Kritis Siswa Kelas 3 SD”. Jurnal DIDIKA: Wahana Ilmiah Pendidikan Dasar 12 (1). https://e-journal.hamzanwadi.ac.id/index.php/didika/article/view/34542.