Nowadays, There are stomy arguments on reconsideration about learners' learning in pedagogy. Constructivism is often adopted in making theorical basis. Constructivism is the position which argues that knowledge is constructed by a subject. This position is not peculiar to pedagogy, but is spread over several theory-areas. So, Constructivism which is adopted into pedagogy, can not exactly establish its identity there. The argument of constructivism has been consistently under discussion in pedagogy for a long time. So, in this study, I make the new education (Reformpädagogik), as a clue to position constructivism in pedagogy, and will treat a relation between constructivism and the new education. Klein, K. and Oettinger, U. touched the similiarity between constructivism and the new education from three points, 'student- orientation', 'emphasis on acts' and 'Teachers' role as a companion'. Furthermore, I formed a hypothesis that I might get hints to enter to today's educational reform in this study.