Clarity Learning Model (CLM) is an innovative model developed based on the excellence of IBL that is tailored to the needs of advanced clarification critical thinking ability through the implementation of distance learning due to the COVID-19 pandemic. This study aims to test the effectiveness of CLM that has qualified valid. The type of research used is a pre -test and post-test group design. The sample in the study consisted of two classes. Class 1 consisted of 24 students, while class 2 consisted of 18 students. Effectiveness is obtained through pre-test and post-test results whose N-gain calculations and N-Gain Average Test difference are then analyzed using Mann Whitney Test. The results in the study showed that CLM is effective in improving the critical ability of advanced clarification in physics courses. These research suggestions are to conduct trials on a broader scale and optimize LMS as a provision for students' initial skills.