<![CDATA[His study aimed to determine the effect of the experiential learning model on students’ critical thinking skills in temperature and heat topics at grade XI of SMA Negeri 1 Laguboti. The study employed a quasi-experimental method using a pretest-posttest control group design. The sample consisted of two classes selected through simple random sampling, namely class XI-3 as the experimental group and class XI-2 as the control group. The research instrument was an essay test developed based on Facione’s critical thinking indicators. Data were analyzed using descriptive and inferential statistics, including normality, homogeneity, and t-test analyses. The results revealed that the mean score of critical thinking skills in the experimental class increased from 41.94 to 84.40 with an N-Gain of 0.73 (high category), while the control class increased from 41.67 to 76.23 with an N-Gain of 0.59 (moderate category). Hypothesis testing indicated that the experiential learning model had a significant effect on students’ critical thinking skills.]]>
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