Lengkong, Eduard. “Upaya Meningkatkan Kemampuan Kognitif Anak Melalui Bermain Alat Permainan Edukatif (APE) Kantong Geometri Pintar Di Tk Katolik Santa Theressia Mangaran Talaud”. Jurnal Ilmiah Wahana Pendidikan 10, no. 21 (September 30, 2024): 887-894. Accessed April 17, 2026. https://jurnal.peneliti.net/index.php/JIWP/article/view/11195.