Main Article Content
This research aimed to improve the quality of education through effectiveness of e-module based on android for improving the critical thinking skills of students in pandemic era. There were 414 students as the subject of this research at Public High School 76, class X, XI, XII, Jakarta-Indonesia, from August 2020 to December 2020. This research used the purposive sampling technique with 197 students (class X) as the experimental class using e-module based on android and 217 students (108 students in class XI and 109 students in class XII) as control class using a simple printed module in this school. This method used a quasi-experimental design with a pretest-posttest control group. The instrument used in this method was the learning implementation plan of heat and temperature material with the test in the form of descriptions based on indicators of critical thinking skills (1. elementary clarification, 2. basic support, 3. advanced clarification, 4. strategy and tactics). The result of this research was that the use of e-module based on android application on the topic of heat and temperature was more effective in increasing critical thinking skills compared to using a simple print module. Evidenced by the magnitude of the influence of e-module based on android application in solving critical thinking ability test questions at class X, XI, XII Public Senior High School 76 Jakarta was 0.67, in the interpretation table Cohen's value was 75.1% classified as moderate. The conclusion showed that improving the quality of education through applying this e-module can be used for the teaching and learning process on the topic of heat and temperature so that it can improve students' critical thinking skills.