Improving Student’s Concept Understanding on Equilibrium of a Rigid Body Subject with the Applying of Physics Education and Technology

This research was conducted to get a picture of improving concept understanding of students who get equilibrium of a rigid body subject in senior high schools with applying of PhET (Physics Education and Technology. The study was conducted using quasi-experimental methods with randomized one group pretest posttest design. The population is all grade XI students of SMA Negeri 42 Jakarta. A sample of one class was selected by cluster random sampling. The sample of this research was class XI A with 32 students. Test instruments in the form of multiple choice tests were 18 items with 5 options answer. The data is processed with the help of SPSS 22 software. The results showed that there was an increase in students' concept understanding with a gain value of 0.60 in the medium category.