Since introduction of the school-based management, various educational policies require 'autonomy'
and 'accountability' in curriculum to teachers in the field. In order to solve such burdens of
teachers, integration of curriculum may be a good solution. Inter-disciplinary approach of
integrating one of curriculums is effective to make students reach education available for transition.
Environmental education is now very important part in our society and its influences are abundant
because it is applied to every student in schools. Especially, elementary environmental education is
more crucial since it is applied to childhood when basic concepts about environment are formed.
However, elementary environmental education is declaratory and its contents are usually overlapped
in various subjects without separate one. Accordingly, it should be applied in systematic contents,
reducing overlapped contents through interdisciplinary subject integration. Accordingly, this study
developed two integrated units on the environment and applied it to students in order to review
how inter-disciplinary integrated units on the environment can be composed considering Drake’s
process and methods to develop integrated curriculum in 6th grade curriculum in elementary school.
And then in order to look for how students change in such learning process, by setting changes of
inter-disciplinary knowledge(K), inter-disciplinary skills(D) and environment-related attitude(A), part
of human nature(B) as criteria for the analysis, the changes were analyzed with qualitative
methods. As a result, learners go through significant changes in interdisciplinary knowledge and
interdisciplinary skills in environment and environment -related attitudes. These three aspects
neither are separated nor have linear influences but lead inter-circularly to changes of students. If
designing curriculum with elaborate consideration on these three aspects, circular influences between
interdisciplinary knowledge and interdisciplinary skills and environment -related attitudes in students
will increase their width and depth and transition of learning will be better, as well.