Effect of Augmented Reality on Students’ Learning Outcomes in Atomic Theory: an Experimental Study

This study was carried out to determine the impact of Augmented Reality on students' interests and learning outcomes by analyzing posttest data using SPSS and Independence Samples t-test. This was an experimental research with a Randomized Posttest Control Group Design, which used Augmented Reality in experimental group. The subject was class XII students of Prawira Marta Sukoharjo High School 2024/2025 Academic Year. The material was Atomic Theory with the Discovery Learning model. The instruments were Atom Visualizer application, Atomic Theory module, Student Worksheet (LKPD), posttest, Student Perception Questionnaire, SPSS Test Selector 2.4, and skill domain assessment observation sheet. Data collected from Student Perception Questionnaires, posttests, and documentation. Posttest data is processed by Score Acquisition Percentage. The results of the experimental class were 55% of the Good Category and 45% of the Very Good Category, while the control class amounted to 73% of the Enough Category and 27% of the Good Category. Posttest data analyzed by SPSS tool to get number of mean and deviation, while hypothesis conclusion is made using Independence Samples t-test. The significant value indicates a number less than 0.05 which could be interpreted that H1 was accepted because very significant mean between control and experiment group.