<![CDATA[This research aims to develop a valid, practical, and effective Android-based physics lab guide on the concept of sound that improves students' noise pollution awareness and critical thinking skills. The sample of this study was class XII MIA 1 at SMA Labschool Universitas Tadulako Palu. This study used the R&D (Research and Development) method with the ADDIE model. The ADDIE model consists of Analysis, Design, Development, Implementation, and Evaluation using a one-group pretest-posttest design. The research instruments included a validation sheet, teacher and student response questionnaires, a noise pollution awareness questionnaire, and a critical thinking skills test. The findings indicate that the Physics Lab Guide is valid, with analysis by material experts and media experts showing an average percentage of 89.93% and 86.21%, respectively, categorized as very valid. The results of the study indicate that the physics lab guide is effective in improving students' critical thinking skills, with an n-gain analysis showing a value of 0.7, categorized as moderate, and a percentage increase of 70.18%. It also increases noise pollution awareness, with percentages at 71.36% in the first meeting and 81.10% in the second meeting, categorized as very strong. Therefore, it can be concluded that the Android-based physics lab guide on the concept of sound is a valid, practical, and effective learning medium for improving noise pollution awareness and critical thinking skills in physics learning at SMA Labschool Universitas Tadulako Palu.]]>
