<![CDATA[This study aimed to analyze the improvement in students’ conceptual understanding of static fluids through guided inquiry learning assisted by PhET simulation. The study employed a quantitative approach with a pre-experimental one-group pretest-posttest design. The participants were 20 students of Grade XI Science 1 at MA Dakwah Islamiyah Putra Nurul Hakim in the 2025/2026 academic year, selected using purposive sampling. Data were collected through a 19-item multiple-choice test that had been tested for validity, reliability, item difficulty, and discrimination. Data analysis included the Shapiro-Wilk test, paired-samples t-test, and normalized gain (N-Gain). The mean score increased from 42.37 to 86.84, with t(19) = ?17.98, p < 0.001, and an N-Gain of 75.6%, categorized as high. The N-Gain for C1–C4 was categorized as high, while C5–C6 was moderate. The results indicate an improvement in students’ conceptual understanding following the intervention; however, without a control group, the findings cannot definitively establish a causal relationship.]]>
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