In this study, we developed the STEAM integrated teaching materials using solid crystal structures and examined the effects of this class on the learners. The STEAM teaching materials were developed based on the PDIE model as follows. First, through the preparation process, the subject was selected and the curriculum was analyzed. Second, the curriculum proposal, multimedia materials, and activity sheets were produced through the development process. Finally, the preliminary class and the main class were executed twice to evaluate the learners and the instructors. As a result, it was found that the learners were satisfied with the program with 4.68 points in the preliminary class and 4.80 points in the class, out of the total score of 5 out of 5 points. In addition, even in the case of the instructors, the satisfaction with the program was high.