Sumberwangi Elementary School is facing problems in third grade Natural Sciences (IPA) learning outcomes, with several students getting scores below the Minimum Completeness Criteria (KKM). Monotonous learning methods cause students to feel bored and less successful in their assignments. This research aims to improve science learning outcomes through the application of the Problem-based Learning (PjBL) model which uses real world scenarios for class III at SDN Sumberwangi. This type of research is classroom action research. This research involved 16 third grade students at SDN Sumberwangi. Data is collected through tests and learning observations. The results show an increase in the average student score from cycle 1 with PjBL from 71.56% to an increase in cycle 2 of 78.75% with overall student completeness. In accordance with these results, it can be concluded that the use of the PjBL Model can improve science learning outcomes which are characterized by increased student activity and knowledge. It is recommended that Sumberwangi Elementary School teachers apply this model in science learning and further research is needed to evaluate its effectiveness in other learning areas at secondary school level.
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