Wandini, Rora Rizky, Sholihatul Hamidah Daulay, Emeliya Sukma Dara Damanik, Mardianto Mardianto, and Akhyaruddin Akhyaruddin. 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.