Nurlela Sari, Mohamad Syarif Sumantri, & Ishak G Bachtiar. (2018). The Development of Science Teaching Materials Based on STEM to Increase Science Literacy Ability of Elementary School Students. I. J. Of Advances in Scientific Research and Engineering-IJASRE (ISSN: 2454 - 8006), 4(7), 161-169. https://doi.org/10.31695/IJASRE.2018.32808