Influence of the PhET Simulation-Assisted Project-Based Learning Model on Students' Ability to Master the Elasticity Concept

This study aims to determine the effect of PhET simulation-assisted project-based learning model on students' ability master concept elasticity. The type research used in this was a quasi-experimental design with pre-test and post-test control group design. population were all students class XI IPA at SMAN 1 Wanasaba East Lombok, totaling 142 students. sample taken using purposive sampling, so that 31 selected 2 as experimental class. independent variable class, while became variable. instrument measure mastery is test form description material elasticity 6 questions. results data analysis showed initial knowledge almost same, but after being given treatment, average score 79.22 72.64. t Independent Sample T significance (2 tailed) less than 0.050, it can be concluded assisted by simulation has an