Warming up、Pre-reading、Reading、Comprehending优秀教案内容

教学设计

课题：人教版选修九第二单元Reading Teaching aims: a.

Learn and master the key words and expressions: voyage, mercy, overhead, offshore, outward, precise, simplify, portable, tendency, reliable, at the mercy of , work out, aim to, in relation to, even though…

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. Teaching difficult and important points: a.

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

How to improve the students’ reading ability. Teaching methods: a.

Scanning Carefully reading

b.

Discussion in pairs Teaching procedures & ways Step1 leading in

How did they navigate so well? 设计意图：呈现郑和，Marco Polo, James Cook的照片，问学生这个问题来引出早期的航海工具。然后呈现这些工具的图片、单词和简单的介绍。

Step 2 Fast reading I What navigation was like before modern instruments were used? 1.

Using nature:____________\____________\_____________\_____________\___________ 2.

Using celestial bodies to _______________ to________________ a special cloud formation indicates_________________ 3.

Using

wildlife 

If seaweed was fresh and smelled strongly, the ship ____________land.



Sea birds could be used to __________________when it was nowhere to be seen.

4.

Using the weather

to ______________

to ___________________ 设计意图：通过快速浏览全文，找出有关早期航海的信息。了解文章的大致内容。

Step 3 Fast reading II What navigational instruments are used in early navigation? 1. Finding longitude

--------the compass 2. Finding latitude-----the bearing circle (方位圆)

-----the astrolabe (星盘) -----the quadrant (象限仪, 四分仪) ------the sextant (六分仪) 设计意图：让学生快速找出四种航海工具，为下面的细度做铺垫。

Step 4 detail reading I 1.

Read the passage and answer the following questions. What is the use of a bearing circle, strolabe, 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

C. to measure the speed of the ship

D. to tell the time 设计意图：学生能够通过阅读了解指南针的相关信息。

2.Read again and fill in the blanks There were two methods to find

longitude:

1. ___________________________

2. ___________________________ 3.Write down the working principles of the following instruments: 设计意图：

了解其他四种航海工具的信息。

Step 5 detail reading II (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? 设计意图：深入挖掘文本的内容。

Step 6 post reading Read the passage and decide whether the following statements are true (T) or false (F). 1. An early method of calculating longitude was to use a knotted rope tied to a log. 2. The astrolabe was the first instrument to measure the sun’s position.

3. The quadrant was more precise and simplified than the astrolabe, but still had its shortcoming. 4. Up till now, the most accurate and reliable navigational instrument is the sextant.

5. The astrolabe, quadrant and sextant are different kinds of navigational

instruments and they have nothing to do with each other.

设计意图：检验学生是否读懂文章，把握文章内容。