Adopting an action research approach, this study employs the flipped-teaching model in a special early childhood education course to deal with the problems faced by the researcher regarding undergraduate students’ course participation, learning motivation, and effectiveness. During the teaching practice, the study examined both the implementation of the flipped-teaching model and its effects on student participation and learning outcomes. The flipped-teaching model employed herein was comprised of four sections: pre-course preparation, classroom discussion, off-course seminar, and follow-up reflection. The participants were 147 students in a special early childhood education course taught by the researcher in 2018, and the teaching practice was reflected on and adjusted accordingly during the dynamic and cyclical process of action research. Qualitative data, including students’ reflections, records of classroom observations, group learning sheets, and research journals, were collected and then analyzed via the constant comparative method. In order to examine the outcome of teaching practice, quantitative data were also collected with a student feedback questionnaire developed by the researcher. The results include the following. (1) The flipped-teaching model can effectively raise students’ willingness to participate in class and their motivation. (2) The flipped-teaching model can enhance student learning objectives in course acquisition. (3) The flipped-teaching model can promote students’ performance on cooperative learning, self-learning, oral expression, and reflection.