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1、Module 1 Nature and environmentUnit 1TreesPeriod OneReading: Pollution Fighters (P23)Teaching aims:At the end of this period, students are expected to u Understand the meanings of the following wordsaverage, item, product, fighter, fact, scientist, interested, notebook, suppose, breathe, pure, gas,
2、release, oxygenu Get to know the function of trees.u Arouse the interest in the natural world.Teaching aids:Textbook and multi-media facilitiesTeaching procedures:Lead-in:l Look at the pictures of different kinds of tress and guess the topic today.l What do you know about:1. How long do they live? M
3、atch the living things on the left with the average ages on the right. 2. Which kind of pollution do trees help fight?3. Which of the following items come from trees? 4. The best-known trees in Shanghai are magnolia trees. Their large, sweet-smelling flowers are known as the city flowers of Shanghai
4、. Which picture shows a magnolia tree?l Before you read:1. Look at the title, the introduction and the pictures. 2. Then decide whether the following statements are T or F. The pollution fighters are probably scientists. Trees are natural air conditioners. Trees can pass information to one another.l
5、 Read:1. Read the title and the introduction and answer the following questions: Who is doctor Ray? Why does Judy need to interview Dr Ray.2. Read the first part of the dialog (Line 112), learn some key words and phrases: be interested in; notebook, suppose, breathe, pure) and think about the follow
6、ing questions: Why is Dr Ray so interested in trees? Judy knows only a little on trees. Can you give an example? How many examples does Dr Ray give? What are they?3. Read from Line1315 of the second part of the dialog and find out how people can breathe pure cool air. Learn the words: gas, release,
7、oxygen. And use them to tell one major function of trees.l Homework:1. Read the dialog after tape.2. Copy new words and recite them.Period TwoReading: Pollution Fighters (P3)Teaching aims:At the end of this period, students are expected to u Understand the meanings of the following wordshectare, pro
8、duce, alive, as well as, natural, air conditioner, warn, protect ,chemical, nasty, join, communicate, one anotheru Know more facts about tress as our best pollution fighters.Teaching aids:Textbook and multi-media facilitiesTeaching procedures:l Revision:1. What are the products of trees?2. What kind
9、 of pollution can trees fight?3. Trees can provide pure, cool air. How can they do that?l Before you read:1. Look at the 2nd picture on P3 and think about the relationship between trees and air conditioners.2. Learn the new words: alivel Read:1. Read the second part of the dialog.2. Answer the follo
10、wing questions: Why does Dr Ray say that Judy should thank trees for pure, cool air? Why does Dr Ray say that trees are natural air conditioners?3. Find the numbers. There are _ students in Judys class. _ hectares of trees could produce enough oxygen to keep Judys whole class alive and healthy for a
11、 whole year. _ trees can do the job of _ air conditioners running almost all day.l Further-thinking:1. Can trees talk with each other?2. Look at the 3rd picture on P3 and answer: Why do some trees join their roots together underground?3. Think about: When insects attack a tree, how does it protect i
12、tself?l Read:1. Read Line 2534.2. Conclude the two examples showing that scientists are beginning to understand trees and they know trees communicate with one another. l Homework:1. Read Line1334 after tape.2. Copy and recite the new words.Period ThreeReading: Pollution Fighters (P3) & Exercises (P4
13、5)Teaching aims:At the end of this period, students are expected to u Learn the new vocabulary: burn, replace, hardly, destroy, exchange, nature, main.u Be aware of the fact that trees are in danger and we need to protect them.u Review words and phrases by vocabulary exercises. u Deepen the understa
14、nding of the text by comprehension exercises.Teaching aids:Textbook and multi-media facilitiesTeaching procedures:l Look and talk: Learn some phrases: in danger, burn, destroyl Read:1. Read Line 3537 of the dialog.2. Think: What does the last part of he interview tell us? Can you give more examples
15、to show that people are destroying our best fighters against pollution?l P 4Vocabulary C1:Find these words and phrases in the interview on page 3. Read the words around them and choose the best meaningsl P 4Vocabulary C2:Find the words in Column A in the interview and match them with the meanings in Column B.l P 4Comprehension D1:These are some of the
