1 S. Y. Lee, Graduate School of Korea National University of Education 2007
2 J. Y. You, Graduate School of Yonsei University 1998
3 H. S. Cha, Graduate School of Chinju National University of Education 2009
4 J. Y. Park, Graduate School of Kongju University 2003
5 S. Y. Kim, Graduate School of Daegu University of Education 2005
6 Ministry of Education Science and Technology, "Explanation of elementary curriculum" Ministry of Education, Science and Technology 2008
1 S. Y. Lee, Graduate School of Korea National University of Education 2007
2 J. Y. You, Graduate School of Yonsei University 1998
3 H. S. Cha, Graduate School of Chinju National University of Education 2009
4 J. Y. Park, Graduate School of Kongju University 2003
5 S. Y. Kim, Graduate School of Daegu University of Education 2005
6 Ministry of Education Science and Technology, "Explanation of elementary curriculum" Ministry of Education, Science and Technology 2008