The aim of this study is to determine the associating abilities of elementary education pre-service teachers science education program acquisitions with engineering using STEM education. In the study which is a case study, firstly pre-service teachers were trained about the STEM education approach. Then "Elementary School Science Education Program Acquisitions-STEM Activities Form" was applied asking the subjects to prepare activities associating elementary education science lessons acquisitions with engineering. After the application of the form, semi-structured interviews were conducted to ask pre-service teachers' opinions about STEM education, using STEM in elementary education science lessons and the activities they had written in the form. An analysis of the data showed that pre-service teachers could easily associate elementary school science program acquisitions and the field of engineering. A variety of activities were given that could be conducted in the elementary education science lessons. Interviewed teachers gave positive feedback to the approach and stated that it is an educational approach that must be applied to lessons.