Social Studies courses aimed to promote the development of critical thinking skills in students. This study focused on the problems two students with hearing loss encountered while they are using three strategies: "identifying and using reference sources", "perception of chronology" and "critical reasoning" strategies, which is required for the improvement of the critical skills. Action research method was used. A considerable data were collected through observations, interviews, documents, process products and the research diary. Findings showed that making the content of Social Studies concrete with activities and being a model to students while using strategies fostered the strategies students used. At the end of the study, it was observed that the activities that are supported with rich materials and activities accompanied by active participation contributed to the use of strategies with which at first students faced problems.