This study examines how elementary education teacher candidates conceptualize STEM fields through interviews. It finds that candidates have some discomfort with STEM subjects in their thoughts, feelings, and attitudes. The study aims to understand candidates' knowledge and perceptions of STEM to inform curriculum design for teacher preparation programs. It uses a conceptual framework of affective, cognitive, and behavioral components and finds limited understanding of STEM field interconnectivity among candidates. The implications are that teacher preparation programs should consider students' attitudes and further develop STEM education preparation since it is an growing expectation for teachers.