<![CDATA[Students' confidence in their ability to study material and work on physics questions needs to be a concern during the covid-19 pandemic. This belief is called self-efficacy. This self-efficacy can be increased by using teaching materials that are designed by educators according to the characteristics of the students they teach. Concept-based modules are used in basic physics lectures on Particle Dynamics. This study aims to describe the increase in student self-efficacy before and after using the module. In addition, this study also wanted to see whether there was a significant difference in student self-efficacy between before and after using the module. This research method uses a pre-experimental method with one group pretest posttest design. The sample used in the research is odd semester students for the 2021/2022 academic year. The results showed the <N-Gain> value of 0.45 which indicated that there was an increase in student self-efficacy after using the concept-based module in the moderate category. The difference in student self-efficacy between before and after using the concept-based module was also significant by referring to the sig value. (2-tailed) 0.000 < 0.05.]]>
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