Unit 7 Protect the earth 教学设计 2.doc

Unit 7 Protect the Earth 教学设计 2 教学目标： 1. 学生能初步理解并且会听、会说、会读和会拼写单词及词组：use，much，oil，glass等，和会运用句型：we use... to... 2. 学生能初步听懂并且会说、会读单词protect the Earth，coal，save energy, come from， cut down，waste water，reuse，plastic, wood, too much, useful 等。 3. 学生能初步感知情态动词should及shouldn’t的用法 4. 学生能初步感知保护环境的重要性。 教学重难点： 教学重点：学生能初步能理解并且会听、会说、会读和会拼写单词及词组：use，much，oil，glass等，和会运用句型：we use... To... 教学难点：学生能初步感知情态动词should及shouldn’t的用法 教学准备：图片 教学过程： Step1. Greeting and lead-in 1. Greeting 2. Sing a song< Two little blackbirds> Question: why do the little blackbirds fly away? 引导学生用Unit6 所学知识回答： Because the air is dirty. Because there aren’t any trees on the hill. They have no home. T: Now our living environment is polluted, so we should protect the Earth.——出示课题并教读。We should make the Earth a better place for you and me, and the entire human race. Step 2. Pre-reading 1. 出示无污染的地球图片。 T：Look, the Earth is a beautiful place. There are many kinds of sources in it. Do you know some of them? ( water, trees, air etc.) 2. Guessing game T: Here are another sources. Let’s guess what they are. ① It’s black and hard. We can find it under the ground. It can make us warm. There’s a lot of it in Shanxi. ( coal ) ② It’s a black liquid. We can find it under the ground too. Cars need it. ( oil ) ③ It’s usually white and thin. We can write and draw on it. ( paper ) ④ It comes from trees. We use it to make tables, desks, chairs, beds and many other things. ( wood ) ⑤ It’s light and soft, but it’s strong. It’s widespread in our life. ( plastic ) 3. T: They are useful things for us, how do we use them? For example: We use coal and oil to make energy. 板书： use... to... 引导学生说出 water，wood，paper，plastic等资源的用法。 E.g. We use water to clean things, wash clothes, cook food... We use paper to make books. We use wood to make tables, chairs, beds and other things. We use plastics to make bags and bottles. Step 3. While- reading 呈现一幅被污染的地球图片。 T：Look at this picture. Is it still beautiful? Today, there is a lot of pollution. We should protect the Earth at once.(点题) What can we do? 1. Watch the cartoon and find the four key points of the text. ( save water, save energy, save trees and don’t use too much plastic) 并板书。 2. Listen to the tape and answer the questions. ① What do you think of water? (useful) ② What do we use water to do? (drink, clean things) ③ Is there a lot of water everywhere?（no） ④ What shouldn’t we do?(waste) ⑤ What should we do? (reuse,save) 教师根据学生回答进行板书。 3. Read the second part and judge. ① Most of our energy comes from coal and oil. (T) ② There is a lot of coal and oil on Earth. (F) ③ We should drive cars every day. (F) ④ Cars use lots of energy. (T) 4. 呈现光头强砍树的画面。 T: What is he doing? S1: He is cutting down trees. 教学 cut down T: Is he right? We should stop him right now. Why? 引导学生说出 Trees help keep the air clean. 5. 塑料瓶、塑料袋实物展示。 T: we use plastic to make bags and bottles. We often use them in our daily life. Do you often use them? 呈现课文图片。 T: Look at this picture. What do you think of it? 引出句子：Too much plastics is bad for the Earth. T: What should we do? 学生自读课文，并在文中划出关键词句。 板书：We should ... We shouldn’t ... Step 4. Post-reading 1. Read the whole passage loudly and finish the exercise ” think and write” on page70, and then check the answers. 2. Retell the text according to the blackboard design. 3. Brain-storm. T: The Earth is so important for us. We should protect it. Now I’ll give you some suggestion. Can you tell me what we can do. E.g. T: To protect the Earth, we should save water. S1: Water is important. S2: Water is useful. S3: We drink water every day. S4: Trees and flowers need water. S5: We should reuse water. S6: We shouldn’t waste water. 4. Introduce the slogan “ Save the world, save our lives.” to the students. Step 5. Homework 1. Read and retell the passage. 2. Finish the exercise “True or False” on page70. 3. Collect and make good use of waste materials.