Learning about Language优秀课堂实录

Book9 Unit 2

The Greatest Navigational Journey教学设计

武汉市育才高级中学

杨静

Teaching objectives:

To help students discover and learn to use some useful words and expressions To help students know Captain Bligh was able to overcome all the difficulties along their ]trip back to the Island.

Procedures Step I Warming-up 1.

Present a world map and ask students how many oceans are there in the world. 2.

present some pictures about some great navigators and explorers home and abroad in history.

3.

Back in 17th century, what navigational instruments did people use?

Step II skimming

1.Where are these pages from? 2.How many parts are there in this passage? What are they?

Step III Scanning

1. I was forced to join Captain Bligh in the small boat.

2. After the crew took over the ship “Bounty”, Captain Bligh was allowed to take with him a chart ,

a compass and a quadrant. 3. It was very difficult for us to get a correct reading from the quadrant as the boat moved constantly during the course.

4. Captain Bligh used a system called “dead reckoning” and he knew there was land directly southwest of their original position.

Part B: Careful Reading

1.

According to page 1, match the left part with the right part. Tides and currents

can be used to work out the latitude

Ａ

The North Star

accelerates

the speed

Ｂ

Wind

can be used to plot their position

Ｃ

The sun

identifies the position of a stream or a river

Ｄ

The cloud

indicates

there is land nearby

Ｅ

Fresh seaweed

leads people to land

Ｆ

Birds

carry ships to their destination

Ｇ

Fog

2. How many parts are there on page 2?

3. Why are speed and time important in working out the longitude of a ship? 4. How many methods of finding longitude are mentioned in the first part? What are they?

5. How many instruments are used to find latitude？What are they? 6.What is the relation among the astrolabe, the quadrant and the sextant? Step Ⅲ

Practice

What would you do if you come across the following problem during your voyage? Read the conditions below, then discuss in your group and write down your plans of action to deal with them.

What would you do if

You were far from land and a storm arose You were blown off -course You wanted to keep a straight course you were lost with no land in sight You were offshore but you needed more food and water You knew your latitude, but did not know your longitude.

Step IV

Useful Expressions

(Group work)Plan of action

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