<![CDATA[Amid the demands of the 21st century, elementary school students often face challenges in interpersonal cooperation and in processing critical information. This study empirically examines the effect of the Montessori Method, supported by a Natural and Social Sciences (IPAS) activity book, on the social skills and information literacy of sixth-grade students. Using a quantitative, quasi-experimental design with a non-equivalent control group, the study involved a sample of 56 students at SDN Jatisari, utilizing validated questionnaires and objective tests, and was analyzed using MANOVA. Descriptive results showed that the experimental group achieved significantly higher mean scores for social skills (M = 82.07; N-Gain = 0.61) and information literacy (M = 91.89) than the control group (M = 59.25; N-Gain = 0.04; M = 68.50). The MANOVA simultaneous test confirmed high statistical significance (p = 0.000; Wilks' Lambda = 0.066) with robust univariate R-squared values of 0.932 and 0.676. In conclusion, this application effectively mitigates class conflict whilst optimizing scientific data verification skills. This research makes a new scientific contribution by integrating traditional Montessori physical principles into a modern printed activity book format and by expanding their pedagogical application in social studies instruction at the upper elementary school level.]]>
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