The present study has been developed in order to inquire the cognitive awareness of the 2nd grade-level students of the Science Teaching program on "sensors", which has an important place in the development of the robotic and automation systems. In the study, the method of case study, which is one of the qualitative research motifs, was used. As the data collection tool of the study, the semi-structured interview form composed of open-ended questions, which was prepared by the author of the study, was employed. A great majority of the students stated that sensors were devices sensing the physical changes in the environment in place of human beings. In addition, they also stated that sensors were used in today's technology for the purposes of imaging, control and protection. It was determined within the scope of the study that, although the students knew about the types of sensors, they couldn't realize the other sensors they encountered in their environment in their daily lives.