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Abstract

This study aims to analyze students' self-efficacy using STEM-based Project Based Learning (PjBL) learning models. The research design uses a quasi experiment consisting of two groups, namely the experimental group and the control group. The experimental group got the treatment in the form of STEM PjBL learning while the control class used conventional learning. The self-efficacy instruments used in this study were divided into five categories. Quantitative data obtained from the study were analyzed using an independent sample t-test to see whether there were differences in self-efficacy in the two classes. The effectiveness of the treatment given in both classes was analyzed using the average Gain (N-Gain) value obtained by both classes. The results showed that the students' self-efficacy increased after the learning of STEM PjBL was given. In addition, the increase in the average N-Gain score obtained by the experimental group is better than the control group.

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