Objective: The study aim was to provide pre-service early childhood teachers with experiences in self-awareness, critical thinking, and problem-solving in various life situations through the implementation of STEAM-based education for sustainable development programs. Accordingly, I have analyzed the meaning of these experiences to determine the kinds of sustainable life perceptions, attitudes, and practical capabilities exhibited by pre-service early childhood teachers. Methods: The program was conducted over 24 sessions with 24 pre-service early childhood teachers from the Department of Early Childhood Education at B University in B City. To analyze their experiences, discussions, presentations, transcription data, activity results, reflective journals, individual Internet café data, and individual and group interview data were collected and analyzed. A meaningful topic was derived through a comprehensive analysis based on practical eclecticism. Results: Experiences in the problem-solving process were categorized as “reviewing familiar problem situations”, “solving problems together”, and “finding new problem situations on your own”. In addition, the experiences of pre-service early childhood teachers were categorized into “looking back on my daily life”, “growing up as a member of a sustainable society”, and “thinking about the role of teachers in education for sustainable development”. Conclusions: Participation in this program helped establish a correct understanding, values, and attitudes toward sustainable development through self-awareness, critical thinking, and cooperation during various problem situations hindering the development of a sustainable society, Study participants not only grew as a members of a society but they also developed into a pre-service early childhood teachers with expertise and practical capabilities in education for sustainable development. Therefore, STEAM-based education for sustainable development programs can be employed with implementation of pre-service early childhood teacher education. The end result will be recognition of these teachers as members of a sustainable society with expertise in education.