Step 1. Pre-reading, 课前播放动画（We are going green） 1.Guess the riddle引出Earth 教授： There is some air and many rivers on it. There are also many trees on it. There is some rubbish on it. T:What is it? Ss: It’s Earth. (把地球贴黑板 领读) 2.提出PK竞争制： T: Look at the picture of our Earth. Is it beautiful? How about this one? There isn’t much water and many trees. So this one is more pretty right? OK, do you want to make is beautiful? Let’s have a PK. Boys you represent blue seas. Girls you represent green trees. If a girl answer a question correctly, Miss Zhang will put a sticker on this Earth. Understand? 3. Try to say欣赏图片说说地球存在的问题： T: In fact, many years ago, our Earth was beautiful. But now is it beautiful？展示图片 T: Is the Earth beautiful now? What’s wrong with the Earth？ S1: There is not too much water.(学习too much：a. also b. a lot of) S2: There are not too many trees. S3: There are too many cars. S4: There is too much plastic.(教读plastic，通过图片学习意思T: There are two pictures. Which one is about plastic? … Yes, one is about plastic, is about glass.) 4.揭题： T: Our Earth faces so many problems, right? How to protect and make our Earth pretty? (let’s learn U7 读标题) Step 2 .While-reading, 1.Scan and find为每幅图找标题： T: First, open your books and turn to P68. Read the story quickly and try to find the four titles.【The title of P1…Save water. Save energy(学习生词energy，coal，oil). Save trees. Don’t use too much plastic.】 Save water 2.Think and say谈论第一个话题 Save water: T: First, save water. Let’s have a talk———What do we use water to do ? … So, what do you think of water?(评价: I agree with you)... Is there a lot of water everywhere? 3.教授waste,reuse： T: Look at his behavior. Is it good? It’s wasteful.(教授waste) We should not waste water. What should we do?(There’s not much water in many places.) Save reuse(教授re) 4.Read after tape(Save water) Save energy 5. Read and answer T: Part two, save energy. Who can help Miss Zhang to read Q1 and Q2? Thank you. OK class , this time please read the second part quickly and underline the answers. T: Where does the energy come from? (Sixty-three percent of the energy comes from coal. And seventeen point one percent of the energy comes from oil. So most of the..) T: Why should we save energy? S: …. T: So we should… We should not… 6.Look and think: What else should we do to save energy? S: We should turn off the .. when we are not using it. 7.Read the second part T: OK this time, you should read by yourselves and find out the words that we read falling tone… Can you tell us what words did you find? The words we read falling tone. 8.Question PK T: It’s time to learn Part3and4. Let’s have a question PK. First, you should read Part3 and 4 carefully. Then, ask and answer questions. Pay attention here: In part3, boys ask, girls answer… 在每个部分提问回答之后带着学生回顾知识点：T: So we know wood comes from… We use…to… Should we cut down too ... ...
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