This research aimed to describe students’ responses to using thematic integrated module based on scientific approach to improve critical thinking skills on the theme of My Dreams in grade 4 MI Mambaul Ulum Landean Plumpang Tuban. The research method used in this research is descriptive quantitative research. Data collection using test instruments and questionnaires. Analysis of test results showed an average percentage of 79.2% with critical criteria. Analysis of student responses with questionnaires showed that 82% of students stated that the use of thematic modules could improve critical thinking skills.