This study examines 1) how Korean elementary teachers implement curriculum integration in their teaching practice and 2) what Korean elementary teachers experience in implementing curriculum integration. Several issues evolved from the analysis of three teachers' experiences: firstly, the teachers' lack of theoretical frameworks for curriculum integration, secondly, the teachers' pragmatic approach to curriculum integration, and thirdly, the limitations on implementing curriculum integration. In order for curriculum integration to be properly implemented and sustained, teachers' roles in and understanding of the curricula are crucial. Thus, the implications of the findings are discussed in terms of teacher preparation and training. (Contains 7 notes.)