Nurlela Sari, Mohamad Syarif Sumantri, Ishak G Bachtiar. The Development of Science Teaching Materials Based on STEM to Increase Science Literacy Ability of Elementary School Students. IJASRE [Internet]. 2018 Jul. 5 [cited 2024 Dec. 23];4(7):161-9. Available from: https://ijasre.net/index.php/ijasre/article/view/513