Basic Mathematics

Choi Yong-jun et al.

Didimdol Editorial Department

NE Neungryul Mathematics Education Research Institute

NE Neungryul Mathematics Education Research Institute

Sky Education Editorial Department

Teacher Ahn's Gifted Education Research Institute

John Stilwell

Sky Education Editorial Department

Cheonjae Textbook Editorial Department

University Textbook Research Association

Sky Education Editorial Department

Sky Education Editorial Department

Lial et al.

Sky Education Editorial Department

Sky Education Editorial Department

Educational Evaluation Institute Editorial Department