九年级英语Unit 1Life on Mars.doc

9 B Unit 1 Life on Mars
Main Task

江苏省天一中学 黄庆华

第一部分 简要提示

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 we’ve 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 , we’ve learned a lot about Mars. Can you say something about it according to the keywords ? Let’s start .
Task One How much do you remember about Mars? (PPT)
1 Temperature: -133℃ -- 27 ℃
2 Color: red
3 Moons: Phobos, Deimos
4 Size: about one-half the diametre of Earth
5 Location: between Earth and Jupiter
6 Distance from the Sun: 142,000,000 miles away
7 One year on Mars: 687 Earth days
8 Surface: a little like the surface of Earth
9 Atmosphere: 95% carbon dioxide
T: From the reading we’ve 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. Let’s see who has a good memory.
Task Two About life on Mars (PPT)
1 Transport: space shuttles instead of spacecraft…
2 Food, water, air: develop plants to produce…
3 Gravity: three-eighths of that on Earth, fly away into space special boots…
4. Home: in a dome with ten bedrooms and robots do most work…
5. School: online schools, e-teacher, computers connected to interplanetary network…
T: So many people think it’s 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
※ It’s 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.
※We’ll 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 .
※ It’s too cold to stay outside.
※ It’s too far away from friends on Earth.
T: It seems that there are more advantages than disadvantages . So let’s 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 .Let’s 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 Weather
4 Money
5 Clothes

6 Transport
7 School
8 House
9 Animals
10 Free time
T: Here are five differences that he may find about life on Mars: transport; shopping; money; animals and free time.
Task Six Match Daniel’s ideas about living on Mars with different subjects. (PPT)
1. Cars float in the air
2. Keep them away with laser light
3. Low-gravity basketball game
4. Many online theatres
5. No air pollution caused by traffic
6. Planet Mars Bank
7. Space fashion and food shop
8. Things from Earth are hard to find
9. Usually friendly
10. Visit the two moons

( subjects: Animals, Transport, Free time, shopping, money )
T: OK. Let’s check the answers on page 19 together.
T: Use the information in the flow chart to finish the exercises on page20 of SB. Now let’s check the answers. (PPT)
Keys
1 friendly 2 angry 3 laser light 4 Planet Mars Bank
5 online 6 two moons 7 low-gravity basketball 8 shopping malls
9 space fashions 10 hard to find 11 comfortable 12 never late
13 no air pollution 14 floats in the air

T: Congratulations, you got all the right answers.
T: Well , Daniel has finished his flow chart and his writing. Let’s 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 Shopping
2 Food
3 Weather
4 Money
5 Clothes
6 Transport
7 School
8 House
9 Animals
10 Free time

Step Eight Making another flow chart and write the guide (PPT)
T: That’s my flow chart. It’s colorful ,isn’t it?
T: Here’s my sample of the beginning of another guide. If you don’t 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“Ｇoogle”搜索引擎去搜索你想要的信息)

Sample: (PPT)

When we arrive on Mars , we’ll 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、课本等各种资源积累资料并合理使用。
Homework
1 Read the guide to living on Mars aloud .
2 Make a flow chart about another guide to living on Mars yourself.
3 Finish writing your guide.
说 明
本课时是9B Unit 1的Main task。其任务是以流程图形式给学生提供写作的语言信息。培养学生整理归纳并运用信息的能力,并运用于写作。同时教师应鼓励学生展开丰富的想象,鼓励他们通过上网或到图书馆查阅资料等多种方式搜集相关信息,并注意写作时材料的科学性。 江苏省中小学英语教学提供