This study is a development research that aims to describe the feasibility of discovery-based Physics teaching modules, practitioner’s assessment on discovery-based Physics teaching modules, improvement of critical thinking skill tests, and to produce discovery-based Physics teaching modules. The method used to achieve this goal is R 2) The discovery-based Physics teaching module in terms of practitioner responses is that the Physics subject teacher is in the practical category; 3) The effectiveness of the discovery-based Physics teaching module in terms of students' critical thinking skills obtained average N-Gain percentage value is 56% and was in the effective category. Students experience increased critical thinking skills on indicators of interpretation, analysis, and inference. This can be interpreted as saying that the discovery-based Physics teaching module developed is effective in improving students' critical thinking skills
Viskaali et al. (Sat,) studied this question.