Wandini, R. R., Daulay, S. H., Damanik, E. S. D., Mardianto, M., & Akhyaruddin, A. (2021). Students’ Scientific Literacy Skills by Using Big book-based Science Textbooks (Changes in Form of Objects). Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini, 6(3), 1897–1906. https://doi.org/10.31004/obsesi.v6i3.1362