《大氣環境保護》沉浸式雙語教案設計──高一地理上冊第二章第七節

教學目標

1.了解大氣污染所形成的全球變暖、臭氧層的破壞、酸雨等現象產生原因及危害；

2.正確認識大氣環境保護的重要意義；

3.通過沉浸式雙語講授，學生在掌握地理知識的過程中，應用英語，提高英語應用能力。

教學重點

1.全球變暖

2.臭氧層的破壞和保護

3.酸雨的危害

教學難點

英語語境的建立與學科學習相結合

教學準備

多媒體課件

教學過程

1.introduction (導入新課)

show to the students the picture that the earth is sweating like a man feeling enormously hot in summer and the picture of antarctic hole of ozonosphere， and watch the short film about acid rain. (出示地球出汗的卡通片，南極臭氧空洞圖片以及觀看酸雨影片片段，指出全球大氣環境已經受到嚴重的污染，所以本課要研究大氣環境保護)

2.presentation （教授新課）

2.1. 整體思路

guide the students to know three atmospheric problems， each problem instructed in this way: first， what causes the problem; secondly， what harmful affects such problem bring; and finally， measures that can be taken to solve the problem.(分別講述大氣環境的三大問題，每個問題的以如下方法呈現：一產生問題的原因；二是其危害，三應當采取的措施)

2.2 具體教材雙語的講授。

2.2.1 global warming

after a picture that show the change of the temperature of the earth in recent year， i put forward a question: “is the temperature going up or down? the students answered and students understand what is “global warming”. then the students discussed the cause of global warming in english， i listened to them and help them express themselves in english， finally conclusions were reached about what the human should do to stop the earth from getting hotter < in this session， students listened to english speaking and they spoke english in discussion and even they tried to express their ideas in english.>

2.2.2 the protection of ozone layer

at first a short english film show how the cfc “eat” the o3， then with the more widely use of the refrigerator that used cfc， antarctic hole of ozonosphere appeared(comes the picture of antarctic hole of ozonosphere) after that， english film show harmful affects about the depletion of ozone layer. in the same way， what to do to protect ozone layer is the last thing for students to know.< english film is good environment for students to immerse themselves in english. )

2.2.3 acid rain

put forward question after question to fulfill the instruction of the content， such as a) what is acid rain; b)how it comes into being; c) where does acid rain frequently happen d)why acid rain is harmful e)what to do to reduce acid rain. ( in this session， i establish question for students to think about， then by picture and film i let the students analyze the problem themselves， and solve the problem themselves， in which they were trained to analyze facts to find the answer， at the same time， english thinking pattern is applied. )