The on-demand video streaming lecture courses are recently spreading in the industrial electronics education programs to offer time flexibility to students of various affiliations and professions. However, this style of lecture course tends to lack real-time communication and feedback from the students, which makes it difficult for the teachers to orient the students' attention to the topics of the lecture. This paper addresses this difficulty in the field of power electronics by proposing a teaching method for the on-demand video streaming lecture course on practical electric power circuit design. In this method, the education video of each class presents an experiment of an actual electric power circuit and then assigns the report proposing the best design for the homework. By sharing the practical design considerations among the students, this method encourages the students to imagine the professional work of the circuit design engineers and to learn the professional circuit design skill. Along with the basic concept of this teaching method, this paper also presents an actual teaching course designed according to the teaching method as well as the students' impressions answered by the questionnaire survey. The majority of the students agreed on the positive effect of this teaching method to motivate the students, suggesting the effectiveness of this teaching method.