九年级英语下册 Unit 1 Life on Mars Main Task教案 牛津版.doc

Unit 1 life on Mars Main Task第一部分 简要提示一、年级：九年级二、教学内容：9B Unit 1 Life on Mars三、课型：中心任务课四、教学目标1 知识目标学会和掌握流程图的制作方法, 为写作做准备。2 能力目标1) 能根据主题设计流程图。2) 能根据流程图写一篇文章。五、教学重难点 1 重点 指导学生根据主题来选取写作所需信息，设计写作流程图。 2 难点 指导学生如何将流程图列出的信息扩展成文。 第二部分 教学流程用时：20分钟Step 1 Lead-in 用时： 分钟（出境）T: Hello, everyone. Nice to see you again. Today we are going to learn Main Task. (大家好，很高兴又和大家见面了！今天我们一起来学习中心任务部分)。Daniel wants to make a guide to living on Mars in 2100，but he needs help . Before we help him with the guide , let me remind you of the information weve known about Mars. (Daniel梦想着有一天搬去火星。现在他想做一份2100年到火星上生活的指南. 在我们帮助他一起做指南之前，让我们一起来回顾一下所学火星的信息。) (PPT)Step 2 用时： 分钟T: Boys and girls , weve learned a lot about Mars. Can you say something about it according to the keywords ? Lets start .Task One How much do you remember about Mars? (PPT)1 Temperature: -133 - 27 2 Color: red3 Moons: Phobos, Deimos4 Size: about one-half the diametre of Earth5 Location: between Earth and Jupiter6 Distance from the Sun: 142,000,000 miles away7 One year on Mars: 687 Earth days8 Surface: a little like the surface of Earth9 Atmosphere: 95% carbon dioxide T: From the reading weve known that life on Mars is very different from that on Earth. And do you still remember what changes may bring to life on Mars ? Say something about each keywords. Lets see who has a good memory. Task Two About life on Mars (PPT)1 Transport: space shuttles instead of spacecraft2 Food, water, air: develop plants to produce3 Gravity: three-eighths of that on Earth, fly away into space special boots4. Home: in a dome with ten bedrooms and robots do most work5. School: online schools, e-teacher, computers connected to interplanetary networkT: So many people think its better to move on Mars because there are so many advantages . , but there are some disadvantages too. Can you help me about the two sides again. Task Three Advantages and disadvantages of living on Mars. (PPT)Advantages Its not crowded or polluted. The transport is more convenient . People will wear fashionable boots . People will have more space . Robots will do most of our work.Well have more time for hobbies. Students will study in online schools.Disadvantages Low gravity will be dangerous. Food does not taste good. Space travel make people feel ill / sick . Its too cold to stay outside. Its too far away from friends on Earth.T: It seems that there are more advantages than disadvantages . So lets do a survey: How many of you would like to move to Mars? Show me your hands if you want to. Task Four Do a survey about moving to Mars. (PPT)Percentage of students who want to move to Mars: _?_ %T: Fine . Daniel wants to move there too. And he made a flow chart about Mars .Lets find out how he did it.T: Daniel has a lot to think about before moving to Mars . He imagines that shopping, animals, money, free time and transport on Mars are different and interesting. Task Five Imagine what will life be like on Mars (PPT)1 Shopping 2 Food 3 Weather4 Money 5 Clothes6 Transport7 School 8 House9 Animals 10 Free timeT: Here are five differences that he may find about life on Mars: transport; shopping; money; animals and free time. Task Six Match Daniels ideas about living on Mars with different subjects. (PPT)1. Cars float in the air 2. Keep them away with laser light3. Low-gravity basketball game4. Many online theatres5. No air pollution caused by traffic6. Planet Mars Bank7. Space fashion and food shop8. Things from Earth are hard to find9. Usually friendly10. Visit the two moons( subjects: Animals, Transport, Free time, shopping, money )T: OK. Lets check the answers on page 19 together. T: Use the information in the flow chart to finish the exercises on page20 of SB. Now lets check the answers. (PPT) Keys1 friendly 2 angry 3 laser light 4 Planet Mars Bank 5 online 6 two moons 7 low-gravity basketball 8 shopping malls9 space fashions 10 hard to find 11 comfortable 12 never late13 no air pollution 14 floats in the airT: Congratulations, you got all the right answers. T: Well , Daniel has finished his flow chart and his writing. Lets try to make our own. (Daniel完成了他的流程图和书面表达, 让我们来做自己的吧.)/T: Firstly, choose the planet you like ; secondly decide how many subjects you would like to talk about ;thirdly search the information about each subject ; then arrange all the information well, lastly , make your own flow chart and write an article about your flow chart. (第一选择你喜欢的星球；第二决定你要谈论的几个话题；搜索关于每个话题的信息；合理安排这些信息，最后制作你的流程图并把它写成文章。)Task Seven My own imagination about living on another planet (PPT)T: Here are some subjects you may choose to make a flow chart. You may choose some or use your own ideas. (PPT)1 Shopping2 Food 3 Weather4 Money 5 Clothes6 Transport7 School 8 House9 Animals 10 Free timeStep Eight Making another flow chart and write the guide (PPT)T: Thats my flow chart. Its colorful ,isnt it? T: Heres my sample of the beginning of another guide. If you dont have enough to talk about your subjects, you may search the Internet for more information you want. Use the search engine baidu or google. (这是我写的指南的开头一段。如果你找不到有关主题的足够信息，你可以用“Baidu”或“oogle”搜索引擎去搜索你想要的信息)Sample: (PPT)When we arrive on Mars , well find life there is very different from that on Earth. The guide describes what life on Mars will be like.First of all, scientists will discover a way to build spacesuits and space homes that will keep us safe from the coldness (-133)at night and low gravity. It will be similar to our air conditioning ,except we use the power for our electricity.小 结今天我们学习了流程图的制作，训练了采集与主题相关的信息并整理成文的能力。希望同学在写作时利用网络、课本等