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

Module 9 Unit 2

Sailing the oceans Reading

Chen Xiaohong Teaching Aims:

a. Learn and master the key words and expressions

navigate, navigator, navigation, navigational; explore, explorer, exploration 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. Talk about sailing the oceans. c. Train the students’ reading ability. Let the students have some knowledge of early navigational methods.

Teaching Difficult Points: a.

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

How to improve the students’ reading ability.

Teaching Methods: a. Discussion to arouse the students’ interest in sailing and exploring the oceans.

b. Scanning the text to get the general idea of it. c.Carefully reading to finish the Comprehending exercises

d. Discussion after reading to make the students understand the text better. Teaching Aids: The multimedia Teaching procedures

Step1 Greetings Greet the whole class as usual.

Step2 Revision

Review some words.. Step3 Leading in Ask the students if they want to know some famous navigators and explorers. Then present them some pictures and some related information about them. Step 4

Pre-reading Show the students some pictures to see if they can identify the early navigational instruments seamen used and explain how they used. Step 5 Reading

Discuss the structure of the passage. Read the passage quickly and then answer some questions. Read the passage carefully and choose the best answer. 1. The reading passage mainly wants to tell us_________

A. that keeping alongside the coastline is the first and most useful form of exploration.

B. that finding longitude and latitude is a must to plot a ship’s position on a map

C. about the skills and navigational aids early seamen used while sailing the oceans

D. how the early sailors used their skills and simple instruments 2. From the passage we have learned _____ A. that early sailors went exploring the oceans using their skills and simple instruments B. why early seamen wanted to sail the seven oceans C. why latitude and longitude are important to plot a ship’s position

D. that there is useful information in an encyclopedia 3. Which one of the following is NOT mentioned in the passage?______ A.

Seaweed

B. Clouds

C.

Moon

D. Winds 4. Which of the following statements is FALSE?_______

A. The sailors can use the height sun to work out their longitude.

B. If there is land close by, there is a special cloud formation

C. The earth moved eastwards at about 15 degrees every hour

D. The bearing circle was the first instrument to measure the sun’s position.

5. 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

C. to measure the speed of the ship

D. to tell the time Step 6 Conslidation Fill in the blanks. We may want to know

1_____ seamen explored the oceans before latitude and longitude made 2__ possible to plot a ship’s position on a map. They were not 3_____the mercy of the sea without modern navigational aids.

4________ (use) nature to help keeping alongside the coastline seems to have been the first and most useful form of 5___________(explore).

6

______________(accomplish) navigators were able to use the North Star to plot their positions. If seaweed was fresh and smelled 7____________(strong), sailors could tell us that the ship was close to land. Seaman could also use the weather and the sea to identify their position. Navigational instruments could be used to help finding longitude and latitude. Before the 17th century, there was no secure method of measuring longitude. Later, when seamen began to use the compass in the 12th century they could calculate longitude using 8 ___________(complicate) mathematical tables. The bearing circle was the first instrument 9 ____________ (measure) the sun’s position. Three other instruments, the astrolabe, quadrant and sextant are all connected. They are 10 ______________(develop) of the another.

Step 7 Homework