Warming up、Pre-reading、Reading、Comprehending优质课教案内容

Unit 2

Sailing the oceans Reading Teaching Aims:

教学目标

a. Learn and master the key words and expressions

voyage mercy minimum nowhere pole overhead offshore accelerate outward longitude latitude precise simplify portable shortcoming updated tendency reliable at the mercy of, even though, work out, be used to, in relation to, aim to , …

b. Train the students’ reading ability. Let the students have some knowledge of early navigational methods. Explain how seamen explored the oceans and what kind of navigational instruments were used to sailors before the 17th century when they were navigating the open seas without seeing the land. Teaching Difficult Points: 教学难点

a.

How to help the students understand the reading passage better. b.

How to improve the students’ reading ability. Teaching Methods:教学方法

a.

Scanning the text to get the general idea of it. b.

Carefully reading to finish the Comprehending exercises on page 14. c.

Discussion after reading to make the students understand the text better. Teaching Aids:教学工具

The multimedia; a tape recorder; the blackboard Teaching Procedures: 教学步骤

Step 1 Lead in Present the students a map of the world and tell them “Today we are going to learn a new unit “Sailing the oceans”. Ask them how

many

oceans

are

there

in the world

?Where are they? Step2 Revision Write down the words you know, which are related to navigation and sea . sail, sailor, voyage, latitude, longitude, equator, horizon, captain, land island, nautical middles, explore, exploration…

1

seaman, seaweed, seafood, shore, offshore, onshore, beach, beach-ball, seabed, sea-bird, seagull, sea shell, seaside, sea water, seasick, coast, coastline, tide, wave, current…

Step3 Pre-reading Show the students some pictures to see if they can identify the early navigational instruments seamen used and explain how they used. Ask students

1.What is a navigator? 2.What is the difference between a navigator and an explorer? How do you think seaman found their way before modern accurate methods of navigation were invented ? Step4 Reading I Fast reading to get the general idea Using Nature Use the information to analyze the navigational skills and write the answers in your own words. 1.To find the ship’s position at sea a sailor used _______________________.

2.A sailor knew that land was nearby if he saw__________________________ __________________________. 3.Sailors used ____________________

______ to increase their speed. Using navigational

instruments

What is the use of a bearing circle, astrolabe, quadrant or sextant?

(

)

What is the use of a compass?

(

)

A.

to set the course of the ship

B. to measure the position of the ship B.

to measure the speed of the ship

D. to tell the time Read again and fill in the blanks There were two methods to find longitude:

1. __________________________

2.___________________________ Write down the working principles of the following instruments:

2

Bearing circle:

Astrolabe:

Quadrant:

Sextant: II Detailed Reading Listen to the tape and then answer the questions 1.

Why are speed and time important in working out the longitude of a ship? 2. Why is the position of the sun and various stars useful for working out latitude? Step5Discussion What would you do if you came across the following problems during your voyage? Step6Homework 1. Review this passage. 2. Preview Learning about language.

3