Agustina, I. et al. 2025. Enhancing Children’s Critical Thinking Through Blended Problem-Based Learning and Eco-Literacy. Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini. 9, 1 (Feb. 2025), 413–422. DOI:https://doi.org/10.31004/obsesi.v9i1.6885.