<![CDATA[This research aims to find out the extent of the impact of a multi-agent environment in problem-based learning models on students’ metacognitive skills of one of the XI MIPA high school students in Yogyakarta on the acid-base material. This type of research is a quasi-experimental with a posttest only design. This research was conducted by categorizing an experimental group by using a multi-agent environment in a problem-based learning model and a control group by using the 5M learning model. The instrument used in this study was an essay question of 10 items. The population in this research was 62 students of class XI MIPA in high school one in Yogyakarta. Sample determination was conducted by using cluster random sampling. In this research data collection techniques were test and observation. Data techniques were descriptive and t-test–with SPSS 20.0. The result of the calculation shows that the t-result is with which the significance level is less than 0,05 which is. Thus, it can be concluded that learning with the multi-agent environment in problem-based learning has an impact on the metacognitive skills of one of the XI MIPA high school students in Yogyakarta.]]>
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