S1·E10 Snowman's Land

Sally and Nick have just finished making a statue of the Cat in the Hat out of snow, but it's starting to melt... Good thing the Cat knows where to take the melting snowman in the cold and snowy north: in the arctic, the kids skate on a frozen lake, make snow sculptures, and learn that water can freeze and melt when it's cold or warm outside. Because it’s getting warmer back home, they leave their snowman sculpture there so they can come back and visit him along their way.