STEM is an approach that integrates science, technology, engineering, and mathematics in learning. The purpose of this study is to find out how much the STEM approach is implemented in science learning and to analyze the effective learning process while implementing the STEM approach. The research method used is literature review through Scopus and Google Schoolar in 2017-2022. The results of a study of 15 articles that match the topic show: 1) the STEM approach is suitable to be implemented in science learning in elementary schools, 2) the learning process with the STEM approach can run effectively if the topic of the issues raised focuses on real problems in students' daily lives, the teacher understands the learning model used in integrating with STEM, enabling student-centered learning by conducting investigations to solve problems. Elementary teachers still need training and guidance in applying the STEM approach during the learning process. Elementary teachers still need training and guidance in applying the STEM approach during the learning process.