九年级上册教学案例设计
what they have learnt from it. Take some notes. notes if necessary. 臭氧层保护日，关注臭氧层的现状。 该宣传片是卡通版，不是枯燥的科教片，能够很好地吸引学生的注意力。如果条件不允许，教师可以从课外书籍上选读一些与环境相关的文章。 T: Here is a video about protecting the ozone layer. Let’s watch it carefully. Then I will ask you something about it. ... T: Now Let’s figure out something about ozone layer. Is ozone layer important or unimportant? Ss: It’s very important T: Can the ozone layer protect us? Ss: Yes. T: What happened to it now? Ss: There is a big hole in the ozone layer. T: Yes. What’s the effect of it? Ss: It’s very important Ss: Yes. Ss: There is a big hole in the ozone layer. Ss: It’s harmful to all the living things, Ss: It’s harmful to all the living especially to humans for it does harm to our things, especially to humans for it 6
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eyes and skin. does harm to our eyes and skin. … Class activity Pre-reading (5 mins) Class activity Step 1: Show two pictures of ozone layer Look at the pictures and learn the 在观看宣传片后，再介绍and more carbon dioxide. Introduce them to new words according to teacher’s 有关臭氧层和温室效应的the Ss briefly to teach the new words. descriptions. 英文词汇，学生容易理解，也容易掌握。 T: Right. Ozone is a special kind of oxygen. It can protect the earth. Now people produce lots of harmful chemicals into the air. They cause a big hole in the ozone layer. So the radiation can pass through the hole and reach the earth directly. … 3 (Show the picture of more carbon dioxide and lead the Ss to learn the new words in the same way.) Step 2: Guide the Ss to predict the main idea Predict the main idea of the 培养学生通过观察图片，of the passage by the given pictures. passage by the given pictures. 预测课文内容的能力，这
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九年级上册教学案例设计
T: Now look at the pictures on Page 39, can you guess what we will learn in the passage. S1: Something about pollution. S2: Traffic pollution / air pollution S3: Ozone layer S4: Cutting down trees S5: Carbon dioxide … Individual work While-reading (20 mins) S1: Something about pollution. S2: Traffic pollution S3: Ozone layer S4: Cutting down trees S5: Carbon dioxide … 有助于学生在日常阅读中，快速获取信息。 Step 1: Let the Ss match the pictures with Match the pictures with the titles in 教师在安排1b的阅读任务the titles in 1 of 1b, and then read 1 of 1b, and then read paragraphs 时，要注意以下两点： paragraphs 2-6 quickly and write down the 2-6 quickly and write down the 1.引导学生用不同的阅读proper title in front of each paragraph. title in front of each paragraph. 策略完成不同的阅读任务。 2.任务的安排要有层次性，从易到难。 4 T: Excellent. Now read 1a quickly, match the pictures with the titles in Exercise 1 quickly. S1: Picture 1 is traffic pollution. S2: Picture 2 is the ozone layer. S1: Picture 1 is traffic pollution.. S2: Picture 2 is the ozone layer. 8
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Individual work S3: Picture 3 is fewer trees. S4: Picture 4 is more carbon dioxide. S5: Picture 5 is factory pollution. … S3: Picture 3 is fewer trees. S4: Picture 4 is more carbon dioxide. S5: Picture 5 is factory pollution. … T: Right. Now please read paragraphs 2-6 quickly, choose a title for each para and write down in front of it. … T: OK, let’s check the answer together. S6: Para 2 is fewer trees. S7: Para 3 is traffic pollution. S8: Para 4 is factory pollution. S9: Para 5 is the ozone layer. S10: Para 6 is more carbon dioxide. S6: Para 2 is fewer trees. S7: Para 3 is traffic pollution. S8: Para 4 is factory pollution. S9: Para 5 is the ozone layer. S10: Para 6 is more carbon dioxide. Step 2: Lead the Ss to read paragraph 1, 5 Read paragraph 1, 5 and 6, find the and 6, find the words in Exercise 2, 3 and 4 words in Exercise 2, 3 and 4 and 训练学生通过上下文猜测
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九年级上册教学案例设计
and guess the meanings of them according guess the meanings of them 单词指代的内容，有助于to the content. according to the content. 学生更好的理解课文。该环节的三个小任务是用相同的方法获得信息，因此，可以一次性完成。 T: Great. Now read paragraph 1, 5 and 6, find the words in Exercise 2, 3 and 4 and guess the meanings of them according to the content. … T: What does “our planet” mean in this para? S1: It means “the earth”. T: What does the word “blanket” refer to? S2: Carbon dioxide around the earth. S1: It means “the earth”. S2: Carbon dioxide around the earth. T: What does the word “it” in Para 5 refer to? S3: It refers to “O3”. … S3: It refers to “O3”. … Group work Step 3: Let the Ss read 1a carefully, choose Read 1a carefully, choose the best 10