3.  Learn:  We divide the land of the earth into five great parts; each of these parts is called a continent.  There are five continents—­Europe, Asia, Africa, America, Australia.  We divide the water of the earth into five great parts.  Each of these parts is called an ocean.  There are five oceans—­Atlantic, Pacific, Indian, Arctic, and Antarctic.  The Arctic Ocean is round the North Pole; the Antarctic Ocean is round the South Pole.