“…Research on STEM has been widely conducted including the implementation of STEM integrated based learning projects to improve science literacy reviewed from gender (Afriana et al, 2016), influence of STEM integrated problem based learning on students' critical thinking skills (Ariyatun & Octavianelis, 2020), application of STEM-based learning projects to understanding mathematical concepts reviewed from students' cognitive styles (Hariyanto et al, 2019), to mastery of concepts (Khotimah et al, 2020), to student problem solving skills (Kaniawati & Suwarma, 2015), to improve understanding of concepts (Heryanti, 2020), cognitive ability and creative thinking (Sumarni et al, 2019), towards understanding concepts, critical thinking and creative thinking (Tipani et al, 2019). The update of this study is to use PBL-based STEM to understand the concepts seen from students' learning activities.…”