The purpose of this study was to determine the application of the Project Based Learning model to science learning outcomes at SD Negeri Mranggen 3. This research was a quasi-experimental design study with a nonequivalent pretest-posttest control group design. The sample in this study were students of class IVA and IVB. Data collection was carried out by means of tests and non-tests. Data analysis techniques with normality, homogeneity, and t-test. The research results obtained from the initial data stated that the sample came from a population that was normally distributed and homogeneous. The requirements test using the t-test yields tcount = 2.444 and the coefficient is significant at the 5% level and db = 48, so ttable = 2.011 so the value of tcount > ttable. It can be concluded that the learning outcomes in class IV SD Negeri Mranggen 3 after using the Project Based Learning model are better than learning outcomes using conventional models.
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