SUNARNO; INDAH PITRIANI, G.; JAFAR, F. S. PENINGKATAN KEMAMPUAN BERHITUNG 1-20 MELALUI PERMAINAN PUZZLE DI TK TUNAS MUDA KOTA BANGUN . Early Childhood Journal, [S. l.], v. 1, n. 1, p. 30–36, 2021. DOI: 10.30872/ecj.v1i1.210. Disponível em: https://jurnal.fkip.unmul.ac.id/index.php/ecj/article/view/210. Acesso em: 5 dec. 2025.