<![CDATA[This study aims to determine the effect of the Project-Based Learning model with a STEM approach on students’ mathematical literacy skills in the Pythagorean theorem and to identify the differences in mathematical literacy skills between students who use the Project-Based Learning model with a STEM approach and those who use conventional learning. The method used was experimental research. This study employed a quasi-experimental design with a nonequivalent control group design. The research population consisted of eighth-grade students at SMP Negeri 3 Sungai Raya, with the samples being class VIII A and VIII C students, each totaling 32 students. The sampling technique used was purposive sampling. The data collection technique employed was measurement, using tests as the instrument. The hypothesis test used in this study was the independent sample t-test. The results showed that the significance value (Sig.) was 0.000 < 0.05, so the null hypothesis was rejected and the alternative hypothesis was accepted. This means that there is a difference in mathematical literacy skills between students who use the Project-Based Learning model with a STEM approach and those who use conventional learning. Thus, the implementation of the Project-Based Learning model with a STEM approach has an effect on students’ mathematical literacy skills in the Pythagorean theorem material in class VIII A of SMP Negeri 3 Sungai Raya]]>
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