Jaenudin, Irfan, Pratiwi Nur Aisyiah, Rani Suryani, and Ari Widodo. 2021. “Content Analysis of the Nature of Science on Elementary Thematic Textbooks 2013 Curriculum”. Premiere Educandum : Jurnal Pendidikan Dasar Dan Pembelajaran 11 (2):227 – 242. https://doi.org/10.25273/pe.v11i2.9187.