The aim of this research is to develop and apply guide materials on "Solid Pressure" and to get students' opinions about the materials. The participants of the study consist of 20 students studying in the eighth grade of a state secondary school in the 2022-2023 academic year. In the study, the development and application processes of the guide materials used are explained in detail. After the application, an interview form consisting of five questions was applied to 20 students in order to get students' opinions about the guide materials. After the LGS exam, an additional interview form consisting of two questions was applied to determine the contribution of the guide materials to the exam. Document analysis was used in the analysis of the interview form. As a result of the research, the students found the applied activities useful, interesting and entertaining in learning solid pressure. At the same time, they stated that the subject is practical, appealing to the visual and auditory senses, and that the subject provides meaningful and permanent learning. It is suggested that more place should be given with applied activities in Science subjects that students have difficulty with.