地質(zhì)災(zāi)害之地震教學(xué)設(shè)計(jì)

1、地質(zhì)災(zāi)害之地震教學(xué)設(shè)計(jì) 八年級上冊雙語教學(xué)教案 葉曉霞 東莞市東華初級中學(xué) 523128教學(xué)目的1 地理學(xué)科教學(xué)過程中，創(chuàng)設(shè)英語語言學(xué)習(xí)環(huán)境，使學(xué)生在獲得地理知識的同時(shí)，提高英語應(yīng)用能力；2 了解地震有關(guān)的知識，理解地震的形成、震級和地震構(gòu)造；3 懂得如何防震，懂得緊急時(shí)刻選擇逃生的正確方法方式。教學(xué)重點(diǎn) 1.地震有關(guān)知識 2 . 防震的方法教學(xué)難點(diǎn) 英語語言環(huán)境與地理學(xué)科教學(xué)相結(jié)合教學(xué)方法 1.英語沉浸法 2探究式 3談話法教學(xué)準(zhǔn)備 自制多媒體課件教學(xué)過程導(dǎo)入新課 聽力練習(xí)引入：聽一則有關(guān)臺灣大地震的英文新聞，回答下列問題：1 What happened in Taiwan on the m

2、orning of September 21st, 1999?2 How many people were killed in the earthquake?3 How many were hurt?4 In which part of Taiwan did it happen?5 What is the news about?聽力原文為： On the morning of September 21st, 1999, a strong earthquake hit Taiwan. It happened in the middle of Taiwan. About 2000 people d

3、ied in the earthquake. The number of people who were hurt reached as many as 4005.設(shè)計(jì)思路：短短的聽力練習(xí)，有助于建立英語語言環(huán)境，成功實(shí)現(xiàn)了由單語環(huán)境向雙語環(huán)境的過渡，聽力內(nèi)容也為新課“地震”埋下伏筆，使學(xué)生對地震有初步的認(rèn)識。講授新課 影片放映 地震發(fā)生情形的影片，那種驚心動魄的場面直觀向?qū)W生展示地震作為一種自然災(zāi)害的破壞性。學(xué)生活動 用英語說出自己對地震的認(rèn)識。（雖然學(xué)生沒親身經(jīng)歷過地震，但報(bào)紙電視上經(jīng)常會有關(guān)于地震的報(bào)道，學(xué)生耳熟能詳，此時(shí)讓他們說說地震的情況，易如反掌，所不同的是，他們用英語表達(dá)，切實(shí)實(shí)

4、現(xiàn)了應(yīng)用英語這個(gè)語言工具來解決問題。提問 Where do earthquake mostly happen?學(xué)生回答 In Japan. （很多學(xué)生對日本地震很熟悉，所以一說到地震，都會想到日本）提問 Why are there so many earthquakes in Japan?地圖演示 六大板塊分布圖學(xué)生活動 Questions: How many plates(板塊) are there in the crust of the earth? What are they? Answers: There are six plates. They are America plate,

5、Africa plate, Pacific plate, India plate, Antarctic plate and Eurasia plate. （教師引導(dǎo)學(xué)生看圖說英語）教師講授 The plates are moving all the time. Sometimes plates are moving away from each other,as a result, there often will be seas or valley, sometimes two plates move to each other. When they move very slowly, li

6、ttle by little, there will be mountains, but when they collide to each other rapidly and fast, there often be earthquake. So earthquakes mostly happen in places between two plates. Theses places are called earthquake belt.地圖演示 全球地震帶分布圖 There are two earthquake belts in the world: one is the Mediterr

7、anean Sea-Himalayas belt, the other is the circum Pacific belt. 動畫演示 地震的形成過程。教師承轉(zhuǎn) As you know, not all the earthquakes are the same. Some are big earthquakes.，others are just small ones. How can you tell the difference? When we want to know exactly how high or low the temperature is, we use degree C

8、elsius. When wed like to know how long a desk is, we often say its 20 or 30 centimeters long. What about earthquake? 講解震級 To tell how big or small earthquake is, we use Richter scale. When an earthquake releases more energy, it is higher on Richter scale. On the other hand, when an earthquake is mea

9、sured on lower Richter scale, it is small earthquake, which often releases less energy. And when the earthquake has a magnitude of 3 or below on the Richter scale, it is called micro-earthquake( 微震)學(xué)生活動 觀看唐山大地震和美國阿拉斯加大地震影片片段。承轉(zhuǎn) 地震對地面的破壞除了受震級的影響，還受什么的影響？圖片演示 地震構(gòu)造示意圖：學(xué)生看圖 認(rèn)識生詞“epicenter” “focus” 和 “epicenter distance”. 教師講解 地震構(gòu)造與烈度的關(guān)系。承轉(zhuǎn) Can we stop earthquakes? No. But we can do something to protect ourselves and make the destruction as little as we can. What can we do when an earthquake happens?學(xué)生活動 探討如何防震逃生（在學(xué)生探討之前，提供給學(xué)生許多防震逃生的圖片，圖片中有些是在地