仁愛版初三英語上冊全冊教案2
ⅱ. teaching aids 教具
圖片/錄音機/小黑板
ⅲ. five-finger teaching plan 五指教學(xué)方案
step 1 review 第一步 復(fù)習(時間:2分鐘)
復(fù)習噪音污染，鞏固section c。
t: is noise a kind of pollution?
ss: yes.
t: what can cause noise pollution?
s1: the machines in some factories.
s2: planes.
s3: loud pop music.
s4: cars.
s5: the traffic.
s6: …
t: please list some other kinds of pollution around us.
ss: air pollution, light pollution …
t: ok, this lesson, let’s talk about the harm that the pollution causes.
step 2 presentation 第二步 呈現(xiàn)(時間:15分鐘)
利用圖片，設(shè)置對話，重現(xiàn)不同種類的污染，導(dǎo)入生詞，呈現(xiàn)1a。
1. t: many things making loud noise can cause noise pollution. what problems does noise pollution cause?
s1: noise pollution can cause hearing loss.
s2: it makes people sick or become deaf.
s3: it also makes people uncomfortable and unpleasant.
t: yes, too much noise can cause high blood pressure as well.
(教師板書新詞并釋義，且要求掌握blood；理解pressure。)
blood, pressure
2. t: noise pollution is harmful to people. but it’s not the only kind of pollution in our world. do you know any other kinds of pollution? let’s look at this picture.
(教師展示圖片一。)
t: what kind of pollution is it?
ss: soil pollution.
t: that’s right. what causes soil pollution?
s4: people use too many chemicals in their fields.
t: so they destroy the soil.
(教師板書，釋義并要求學(xué)生理解。)
destroy
(教師展示圖片二。)
t: look at this picture. what kind of pollution is it?
ss: litter.
t: yes. there’s a pile of rubbish here. it makes our environment dirty.
(教師展示圖片三。)
t: (指著圖片中的濃煙。)what kind of pollution is it?
ss: air pollution.
t: yes. what creates air pollution?
(板書并講解，且要求學(xué)生掌握。)
create
ss: burning coal.
t: with the development of industry, air pollution is becoming more and more serious.
(板書并講解，且要求學(xué)生掌握。)
industry
(教師展示圖片四。)
t: look at the picture. what kind of pollution is it?
ss: light pollution.
t: yes. look at the strong and changeable light. it’s bad for eyes.
3. t: from the pictures, we know pollution is bad for our health in many ways. if there is no pollution on the earth, what will the earth be like?
(板書并講解。)
in many ways
ss: maybe our earth will be greener and more beautiful.
t: yes. we should protect our planet from now on. ok, let’s read 1a and fill in the blanks with the proper forms of the words and phrases above.