Unit 1 life on Mars
unit 1 life on mars
main task
第一部分 簡要提示
一、年級：九年級
二、教學內容：9b unit 1 life on mars
三、課型：中心任務課
四、教學目標
1 知識目標
學會和掌握流程圖的制作方法, 為寫作做準備。
2 能力目標
1) 能根據主題設計流程圖。
2) 能根據流程圖寫一篇文章。
五、教學重難點
1 重點 指導學生根據主題來選取寫作所需信息，設計寫作流程圖。
2 難點 指導學生如何將流程圖列出的信息擴展成文。
第二部分 教學流程
用時：20分鐘
step 1 lead-in 用時： 分鐘
（出境）
t: hello, everyone. nice to see you again. today we are going to learn main task. (大家好，很高興又和大家見面了！今天我們一起來學習中心任務部分)。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夢想著有一天搬去火星�，F在他想做一份21XX年到火星上生活的指南. 在我們幫助他一起做指南之前，讓我們一起來回顧一下所學火星的信息。) (ppt)
step 2 用時： 分鐘
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)