译林版高中英语选必三Unit2 Workbook Building skills 名校教案.docx

Unit 2 Out of this worldBuilding skills内容分析：本单元的主题语境是“人与自然”，话题是“太空探索”，涉及的语篇类型有： 视频、讲座文稿、漫画和杂志文章等。本单元的教学旨在培养学生深入思考人类探索 宇宙的意义并学习宇航员奋勇前进、直面挑战的宝贵品质，培养学生对未知世界的好 奇心与探索精神，加深学生对国家航天科技发展的认识，增强民族自豪感，激励学生 未来为国家科技进步和航天事业发展贡献力量。教学目标：By the end of this section, students will be able to:1. get familiar with extraterrestrial intelligence;collect some expressions to present your opinions;2. write an article to express their opinion on Mars.教学重难点：1. To help students understand the listening materials and finish the listening task;To encourage students to express their opinions bravely;2. To guide students to finish their composition.教学过程：Step 1 Lead-inQ: Do you know anything about extraterrestrial intelligence?Step 2 ListeningAl Space Talk is a podcast devoted to all things about space. The host is introducing the search for extraterrestrial intelligence (SETI). Listen to the talk and answer the following questions.1. How long has the search for extraterrestrial intelligence been going on?The search for extraterrestrial intelligence has been going on for decades.2. What do scientists use to detect extraterrestrial messages ?Powerful radio telescopes.3. When was man s first SETI attempt?In 1960.4. What is the distance between the Earth and each "nearby" star in Project Ozma?About 11 light years.5. What does the SETI Institute want to explore, understand and explain?The origin and nature of life in the universe and the evolution of intelligence.A2 In the second half of the podcast, the host is interviewing astronomer Eileen Guest about contacting extraterrestrials. Listen to the conversation and complete the notes below.Step 3 SpeakingA3 In pairs, discuss whether humans should try to contact extraterrestrial intelligence. Use the example below to help you and pay attention to the expressions in bold.Useful expressions: alien whatsoever civilization launch an attack push the limits of science and technology make a good pointStep 4 Reading and WritingBl What would a city on Mars look like? Read the magazine article and answer the questions below.1. What are the dangers on Mars?To begin with, Mars is extremely cold. Also, its atmosphere is rich in carbon dioxide, so people will not be able to breathe. Still, with no magnetic field, Mars is exposed to much higher levels of radiation.2. Briefly summarize what life on Mars will be like. Include at least three aspects.Since Mars has high levels of radiation, people in Martian cities will probably live underground at first and then above ground. Since it is expensive to send materials to Mars, Martian citizens will have to make good use of the planet's resources and manufacture everything they need. Settlers will probably follow a vegan diet. Also, people there will not travel much because of the radiation. But they may take advantage of Mars9 low gravity an d invent new sports to entertain themselves.82. Is it good or not for human beings to settle on other planets ? Write a short passage to express your opinion.Living beyond the EarthThe United Nations has estimated that by 2050, the world's population will explode from today's seven billion to over nine billion. We do not have a clue what the possible consequences would be. Not surprisingly, quite a number of people are toying with the idea of leaving this planet and seeking a new future in outer space.The most straightforward benefit of populating outer space would be that it increases humanity's chance of survival. By moving a certain portion of the population to other planets, we could relieve the Earth of its burden: overpopulation. Plus, the whole of humanity is stuck on the Earth and history has taught us that it would not be wise to put all our eggs in one basket. Should any planetary disaster happen, for example, an asteroid crashing into our home, it would wipe out the entire human race.Taking the first steps towards a permanent settlement on other planets will also benefit humanity in other ways. The missions to outer space have helped and will continue to help us develop advanced technologies that will no doubt have practical applications back on the Earth. For example, shock absorbers, originally designed to protect astronauts during the extreme conditions of space shuttle launches, are now used in many earthquake-prone areas. In addition, these great projects will bring humankind together. Once we focus on such an ambitious common goal, we can put our differences aside and instead work towards achieving it.It is true that the Earth is the only home human beings have ever known. However remaining a single-planet species would severely limit our chances of long-term survival. To save ourselves from the tragic fate of dinosaurs, we need to seek ways to overcome these challenges, leave the Earth and reach for the stars.教学反思