<![CDATA[The purpose of this study was to determine the effectiveness of the inquiry learning model through simple experiments on the learning outcomes of Science and Social Sciences (IPAS) in fourth-grade students at SD Negeri Sidomulyo 01 Pati. This study used a quantitative approach with One-Group Pretest-Posttest Design. The sample consisted of 17 students. The results showed a significant increase in cognitive learning outcomes, where the pretest mean of 43.53 rose to 79.06 in the posttest, and classical mastery increased from 5.88% to 94.11%. The t-test analysis showed thitung (13.06) > ttabel (2.120). Significant effectiveness was also found in the affective aspect with an average score of 83.00 (Good category) and classical mastery of 82%. The psychomotor aspect showed an average score of 88.95 (Very Good category) with 100% classical mastery. Thus, the inquiry model through simple experiments is effective in improving cognitive, affective, and psychomotor learning outcomes.]]>
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