<![CDATA[The problem addressed in this study is the low level of students' critical thinking skills and learning outcomes. This research aims to determine the improvement in critical thinking skills and learning outcomes of students in class XI AKL 2 at SMK Negeri 13 Medan in the 2024/2025 academic year through the implementation of a collaborative learning model using smart cards in the topic of adjustment journal entries. This study is a classroom action research (CAR) conducted in two cycles. Each cycle consisted of two meetings and included four stages: planning, implementation, observation, and reflection. The research sample comprised 34 students from class XI AKL 2. Data were collected through observation and testing, and analyzed using descriptive qualitative and quantitative methods. The results showed that students' critical thinking skills improved from 62.1% in the first cycle to 78.82% in the second cycle. Meanwhile, the classical learning mastery increased from 70.59% in the first cycle to 100% in the second cycle. Thus, it can be concluded that the application of the collaborative learning model using smart cards effectively enhances students' critical thinking skills and learning outcomes.]]>
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