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人教2003课标版《Warming up、Pre-reading、Reading、Comprehending》优质课PPT课件下载
In anciet times,there were not modern
navigational instruments such as Radar
How had navigators such as
zhengHe found their way before
modern insruments were invented?
Read about what navigation was like before modern instruments were used.
Fast reading
How many ways did people use to help sailing?
1.nature
2.instruments
How does nature help sailing the oceans?
What can instruments help to do?
Sailing the oceans
Fast-reading
to get the general idea.
Page 1
( 10 minutes )
How many ways are used in using nature to help sailing ?
Keeping alongside the coastline
Using celestial bodies
Using wildlife
Using the weather
Using the sea
( 1 minute )
Using celestial bodies