Noly Shofiyah, Noly and Metatia Intan Mauliana, Metatia and istikomah, istikomah and Ria wulandari, Ria UNPLAG STEM Approach: The Development of Optical Instruments Module to Foster Scientific Literacy Skill. STEM Approach: The Development of Optical Instruments Module to Foster Scientific Literacy Skill, 5 (2). ISSN 2615-6881