<![CDATA[Abstract. This classroom action research conducted to improve the ability to think krtitis, learning outcomes, teacher activity and student activity using Creative Problem Solving learning model. This study was conducted in two cycles with 4 meeting. The subjects were students of class XI IPA 1 SMAN 12 Banjarmasin with the number 27. Data were collected through observation, interview and test. Data were analyzed with descriptive analysis techniques of quantitative and qualitative analysis. The results showed that the Creative Problem Solving learning model can improve students' critical thinking skills from an average of 44.03% in the first cycle to 81.89% in the second cycle. Classical learning completeness increased from 55.56% in the first cycle to 88.89% in the second cycle. Activities of teachers in the implementation of measures to increase from both criteria in the first cycle becomes very baikpada the second cycle. Activities of students in the first cycle increased from active criterion to be very active in the second cycle.Keywords: critical thinking, learning outcomes, creative problem solving]]>
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