Jf, N.Z. 2019. Implementasi Model Problem Based Learning dalam Pembelajaran Sains Anak Usia Dini di Taman Kanak-Kanak (TK). Indonesian Journal of Islamic Early Childhood Education. 3, 2 (Apr. 2019), 197–206. DOI:https://doi.org/10.51529/ijiece.v3i2.117.