<p>In Japan, programming education will be introduced in the Courses of Study for Elementary School from FY2020. Although various studies have been conducted on this topic, very few have examined Japanese elementary school computational thinking in terms of the developmental stages of elementary school children. Thus, we developed programming learning materials using concrete objects that can be understood by lower-elementary students. Specifically, we divided program-oriented thinking into three steps: concrete, logical, and abstract thinking; we then made the pupils carry out work in this order to encourage them to think of the sequence of actions necessary to implement the intended act, which involved the measurement and control of an illumination system. Furthermore, we discuss the validity of the proposed material based on questionnaire results of student participants and their parents of a workshop.</p>