<![CDATA[This study developed a printed science teaching module for fourth-grade elementary students using Gagné’s Nine Events of Instruction and evaluated its validity and learning outcomes. The study used a Research and Development (R&D) approach adapted from Borg and Gall. Development was organized into preliminary study, product development, and product testing. Expert review yielded validity scores of 96% for instructional design, 97% for subject matter, and 98% for language (overall mean: 97%). Effectiveness was examined by comparing pretest and posttest outcomes in experimental and control groups and calculating normalized gain (N-gain). The manuscript’s current summary reports N-gain values of 0.65–0.72 and a statistically significant between-group difference (reported as p < 0.05). Exact sample sizes, group-specific pretest/posttest means, the t statistic, degrees of freedom, exact p value, and group-specific N-gain values must be inserted from the original dataset before publication. Practicality is not claimed because supporting results are not presented. The findings provide preliminary evidence of module validity and potential learning benefits within the participating schools.]]>
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