Warming up、Pre-reading、Reading、Comprehending优秀教案说课稿

Unit 4

Exploring plants

Reading

Teaching goal: 1.

to get students to know the plant exploration during 18th and 19th centuries

2.

to get students to practice the reading skills of skimming and scanning

Teaching Procedures: Pre-reading (step 1-3) Reading (step 4-5) Comprehending (step 6,7) Homework (step 8) Step1. The teacher may get Ss to look at the pictures,

and ask: Do you know these plants? Where are they from? Answers are given through PPT, making Ss aware that these commonly-seen plants are not local plants. Step2. Get Ss to think about:

How do you think plants have traveled from one country to another?

Make Ss discuss it with group members, and report their ideas. Step3.Prediction. Ask Ss to scan the title of the reading passage and the pictures

and predict what it is about. It’s an individual work. Step 4.Ask Ss to scan the reading passage quickly and check their prediction.

Meanwhile, find out the answers to these questions: 1.

What is an “exotic” plants?

2.

Why did James Cook call the bay where his ship stopped “Botany Bay”?

3. Why were the sealed glass container called “Wardian cases”?

4. What were the names of the people mentioned in the text who collected plants in the 18th and 19th centuries? Suggested answers: 1. A plant comes from another country. 2. Because it was the bay Joseph collected many new botanical specimen. 3. they were named after the person who invited them. 4. Father d’ Incarvivle, Sir Joseph Banks, Robert Fortune, Father Farges, E H Widson.

Step 5. Get Ss to skim the reading passage and: 1)

match the paragraph1-7 and the topics 2)

find out what happened in the following years:

1500BC

1740s

1751

1769

1784

1833

1843-1859

1897

French Catholic missionaries collected plants in China in the 18th century When plant collecting began Problems of keeping plants alive on long trips When and where plant collecting began on a large scale The famous British plant collector Joseph Banks How Robert introduced Chinese tea to the west Father Farges and the Dove Tree Wardian case Many European plant collectors collected many plants to Western gardens 1899

Paragraph 1 Paragraph 2 Paragraph 3 Paragraph 4 Paragraph 5 Paragraph 6 Paragraph 7 Paragraph 8 Paragraph 9

Step 6. Ss are required to answer the following questions in groups and report answers to the class. 1. Why are there a lot of plant collecting in 18th and 19th centuries? 2. What were some of the negative aspects of plant collecting expeditions? 3. Why did many plants fail to reach their destinations alive? Can you think any other reasons? Suggested answers: 1. Interested in scientific discovery and collecting new plants 2. Negative aspects: disease, near-starvation, sever environment, conflicts with local people, plants dying during long trips or seeds failing to grow, pirates, bad weather, not knowing language and customs. 3. Possible reasons: lack of fresh water, wrong environment like incorrect temperature, lack of sunlight and rain etc.

Step 7. Do Exercise 4 on page 34 . Step 8. Homework.

1.Retell the story to your partner.

2. Finish the exercises in your workbook.