Why? Happy Math
Serie di Libri
di Park Sang-wook
Ultimo:
2014
Libro 1
Why? Wai textbook centered mathematics first grade
di Kim Yoon-soo
Libro 2
Why? Wai textbook centered mathematics Grade 2
di Park Sang-wook
Libro 3
WHY? Happy Math 3
di Park Sang-wook, Lim Hae-bong, Hong Soon-ho
Libro 4
WHY? Happy Math 4
di Park Sang-wook, Park Sung-Il, Linguist Translation Services