This research is motivated by the low learning activity, the ability to think critically in determining the main thoughts, and the learning outcomes of 5th grade students of SDN Pelambuan 2 Banjarmasin in Indonesian learning. Learning tends to be boring, one-way, and makes less use of varied learning models and media. This research aims to improve student activities, critical thinking skills, and learning outcomes through the application of a combination of Problem Based Learning (PBL), Think Pair and Share (TPS) and Snowball Throwing models. This research is a Class Action Research (PTK) with a qualitative approach that was carried out for four meetings. The subject of the study was 19 5th grade students in the even semester of the 2024/2025 school year. Data were collected through observation of teacher and student activities, as well as critical thinking skills and written tests for learning outcomes. teacher activity reached a score of 30 (Very Good), student activity was 84% (Very Active), students' critical thinking ability was 84% (Highly Skilled), and the completeness of student learning outcomes classically reached 89%. Thus, the application of the PBL model in combination with TPS and Snowball Throwing has proven to be effective in improving the quality of the overall learning process.
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