This study aims to analyze student engagement and the factors that hinder student engagement in participating in Natural and Social Sciences (IPAS) learning in 3rd grade elementary school. This study combines descriptive research with qualitative methodology. Third grade students and teachers are the topics of this study. Observation, interviews, documentation, and questionnaires were used to collect data through technical triangulation, source triangulation, and time triangulation. Data collection, data condensation, data presentation, conclusion drawing, and verification are steps in data analysis using an interactive model developed by Miles and Huberman. According to the research findings, the engagement of 3rd grade elementary school students with IPAS learning is still low. This is caused by various factors. Factors inhibiting student engagement consist of internal and external factors. Internal factors include physiological factors such as; fatigue and drowsiness, psychological factors; such as lack of attention and concentration, low interest and motivation to learn, which cause students to have difficulty focusing and less enthusiastic in participating in learning. External factors include social and non-social factors. Social factors include; peer influence that sometimes causes teasing or harassment, thus reducing students' self-confidence, interactions with teachers that still cause fear for some students, and a lack of learning support from parents. Meanwhile, non-social factors are the most dominant obstacles, especially the limitations of media, methods, and learning facilities, such as the use of lecture methods that tend to be monotonous, minimal use of learning media, the lack of LCDs and limited classroom facilities that affect learning comfort. Keywords: student activity 1, Inhibiting factors 2, Science learning 3, Elementary school 4