<![CDATA[This study aims to analyze the effectiveness of deep learning-based inquiry learning in improving students' abductive thinking skills at SMP Negeri 2 Sidoarjo on mixed materials. This study applies a quantitative research method with a quasi-experimental type with a one-group pretest and posttest design. In this study, one group was observed as a subject that began with a pretest before learning, then given treatment in the form of the application of deep learning-based inquiry learning and ended with a posttest. The results of the study indicate that deep learning-based inquiry learning has a positive impact on improving higher-order thinking skills, in this case students' abductive thinking skills. The results of the paired t-test showed a significant difference between the pretest and posttest when before and after the implementation of deep learning-based structured inquiry learning. The effect size results on all abductive indicators also showed that the increase was in the "large" category. The highest effect size value was found in the indicator of formulating problems & determining objectives, and formulating conclusions with the "large" category. The lowest effect size value was found in the analogy indicator which was in the "small" category.]]>
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