Learning outcomes are very important to improve in the learning process, this is to measure students' abilities during learning. The low learning outcomes of elementary school students are the background for this research. The aim of this research is to determine the effect of the jigsaw type cooperative model assisted by PhET simulation media on student learning outcomes and to determine the increase in student learning outcomes using the jigsaw type cooperative model assisted by PhET simulation media compared to using the STAD type cooperative model. The research method used was quasi-experimental with a non-equivalent pretest-posttest control group design with a total of 62 students as subjects. The instruments used are learning outcomes test instruments and documentation. The results of data analysis show that the effect of the jigsaw type cooperative model assisted by PhET simulation media on student learning outcomes was 54.4%. The results of the n-gain test in the experimental class which used the jigsaw type cooperative model assisted by PhET simulation media was 0.5553 while the control class used the cooperative type model. STAD is 0.3298, which means that students who receive science learning using the jigsaw type cooperative model assisted by PhET simulation media are better than students who receive STAD type cooperative learning. The researcher recommends that future researchers focus on learning outcomes, especially on cognitive aspects.   Keywords: jigsaw type cooperative model, PhET simulation media, student learning outcomes
                        
                        
                        
                        
                            
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