人教版 必修五 Unit 1 Great Scientists Reading 公开课 教案

Unit 1 Great scientists

Teaching aims:

1. Learn some new words and expressions:

Words: attend, cure, expert, handle，

Phrases: be linked to, be exposed to , be absorbed into, be to blame (for sth)

2. To examine a new scientific idea.

3. Train the students’ reading ability

Main points: words and phrases

Difficult points: scientific research

Teaching procedures:

Step 1. Warming up

1. Greeting the students

2. Show the Ss pictures of great scientists

Step 2. Pre-reading

1.Read the pictures and title of the book and make a prediction about the content of

the text.

2. Do the exercises on the answer sheet and let Ss analyze the words and finish Part II Step 3 fast reading.

1. Ask the Ss to put them in order and get their answers.

2. Choose the right answer to the content of the text.

Step 4. Reading passage

1. Careful Reading

1) Para.1 Find a problem.

What is the problem?

John Snow was an doctor in London who Queen Victoria as her personal . He thought about helping ordinary people to cholera. Though the cause and the of it were unknown, he wanted to face the and solve the problem.

What caused cholera?

2) Para.2 Make a question:

Two theories(ideas):

1. Cholera multiplied in the air.

2. People absorbed it into their bodies with their meals

3) Para.3 Think of a method

1. What happened in 1854?

2. How many people died in 10 days?

3. What did John Snow do at that time?

4) Para.4 Collect results

Ask students find out the reasons according to the map.

Which house has the largest number of deaths in this map?

A. No. 12

B. No.2

C. No.38

D. No. 29

5) Para.5 Analyse the results

1.What happened to the pump water?

2. What did the people do？

6) Para.6 Find supporting evidence

What ’s the extra evidence?

7) Para.7 draw a conclusion

The polluted water caused cholera.

To prevent cholera from spreading again, what did John Snow do?

①Suggested that the source of all water supplies be examined.

②Instructed the water companies not to expose people to the polluted water any more.

Step 5 Revision and summary

1. review “How did John Snow defeat ‘King Cholera’”

Let students revise the procedure of the research.

1.Summarize the passage.

John Snow－a doctor，_____ Queen Victory as her personal _______.But he was willing to help ordinary people ______ cholera.Many people died _____ there was an _____ .He wanted to face the ______ and solve the problem.Two theories caught her attention.The first suggested that cholera multiplied in the air.The second suggested that people ________ this disease into their bodies and the disease _______ the body.John Snow ________ the second was right but he needed evidence.When another outbreak hit London in 1854，he was ready to begin his .____________ and tried to get information.He found that most of the deaths were near a water __________ and the spread of the disease was ____________ water.With the evidence，he was able to ___________ that polluted water carried the virus.After that，he suggested the source of all the water supplies _____________.Finally “King Cholera”was ____________.

Step 6 Write a report:

1.The question is whether too much homework is good for us.

2. Use the steps to get your conclusion.

Step 7. Homework

1.Make sentences with the following words and phrases:

challenge; announce; instruct; attend; be exposed to; absorb..into; be to blame

2.Do exercise 1, 2 and 3 on page.

Blackboard Design:

Title

New word English meaning

Put forward come up with

Scientific science scientist

Serere bad

Be linked to be connected with

……

V ocabulary.