[1차시]let's go swimming(YBM(최)32-33쪽)

[2차시]let's go swimming(2)(YBM(최)34-35쪽)

[3차시]let's go swimming(YBM(최)36-37쪽)

[4차시]let's go swimming(YBM(최)38-39쪽)

[5차시]let's go swimming(YBM(최)40-41쪽)

[6차시]let's go swimming(YBM(최)42-43쪽)