1、英语（选择性必修第三册）Unit 2 Out of this worldProject巢湖学院 潘寒婷 巢湖市第六中学 唐德清I. Learning objectivesBy the end of the lesson, students will be able to:1. be familiar with names and positions of the seven planets;2. talk about possibility of living on the seven planets and the moon;3. learn the core vocabulary;4. u
2、nderstand the profile How to live on Mars;5. make a profile on how to live beyond the Earth.II. Key competence focus1. Exhibit the students imagination.2. Develop the students power of finding problems and solutions.3. Improve the students writing skills.III. Predicted area of difficulty1. Dialogue
3、about the possibility of living on the seven planets and the moon.2. Making an essay on how to live beyond the Earth.IV. Teaching proceduresT greets the class.T: Class begins, boys and girls! Good morning/afternoon!Step 1 AP27 Discussing the seven planets and the moon where humans could possibly liv
4、e.1. Identify the seven planetsT: Look at the chart. What is it?T: Its the chart of the solar system.T: What is the first sphere?T: Its the sun.T: Eight planets refer to the eight major planets in the solar system. According to the distance from the sun, they are 2. _ 3. _ 4. _ 5. _ 6. _ 7. _ 8. _ 9
5、. Answers: 1. The sun 2. Mercury /mkjur/ (水星) 3. Venus /vins/金星4. Earth 5. Mars 6. Jupiter /dupt/ (木星) 7. Saturn /stn/ (土星) 8. Uranus / jrns/ (天王星) 9. Neptune /neptjun/海王星2. BP27 Discuss the seven planets and the moon where humans could possibly live.T Work out the dialogue tips together with studen
6、ts.Mars is a rather harsh environment no oxygen in its atmosphere very cold radiation the atomospheric pressureIn a protected environment in a heated capsule with source of oxygen.Sample answers:W: Can humans live on Mars?M: Its hard to do it, because Mars is a rather harsh environment. W: Would you
7、 please tell me more about it?M: First, Mars has essentially no oxygen in its atmosphere. Hence a human could live for 2 or 3 minutes in the Mars atmosphere. After that, human would die.W: Thats terrible.M: Secondly, it is very cold on the Mars.W: So we would die of freezing and lack of oxygen on Ma
8、rs. M: You are right if unprotected. Thirdly, radiation. W: We need protection against radiation to be healthy and not get cancer. M: Therere many other problems. For example, the atmospheric pressure is not suitable for humans just like how when you go deep in the ocean the pressure increases.W: Oh
9、, its hopeless!M: However, humans could live in a protected environment in a heated capsule with source of oxygen.W: I hear there is currently a mission planned by a private company to send humans to permanently live on Mars! M: Time will tell if theyre successful.【设计意图：首先帮助学生认识太阳系八大行星的名称和位置，然后讨论人类殖
10、民的可能性。为后面写作奠定基础。】Step 2 CP27 Understanding the profile “How to live on Mars”T asks students to read through the profile and answer some questions.T: What problems are mentioned in the profile? And how can we solve them?T Discuss the problems and solutions mention in the profile.T: The first problem
11、is “radiation” and the second one “dust storm”.T: We can build permanent shelter to protect against radiation and dust storm.【设计意图：理解短文How to live on Mars，为下一步写作奠定基础。】Step 3 Make a profile on how to live beyond the Earth.T: Which of the seven planets and the moon do you think we can colonize in the
12、near future?T: Suppose we lived on the moon, what problems would we meet and how could we solve them?1. Make an outline of the profile.T: List the problems and solutions.ProblemsSolutionsBreathable airHarvest oxygen in the soil Water Collect the buried ice at the south pole of the moon. Create water
13、 with oxygen and hydrogen shipped from the Earth.Power Manufacture solar cells Generate electricity from the reaction of hydrogen and oxygen Use nuclear powerFoodGrow food using chemicals like carbon, nitrogen oxygen, hydrogen, etc.2. Write the profile. (If time is limited, assign it as homework)T:
14、Write a short article on how to solve the problems of living on the moon.Sample answer:What if we lived on the moon?Wouldnt it be cool to be able to live, vacation and work on the moon? Lets say we do want to colonize the moon. But there are some basic needs that the moon colonists would have to tak
15、e care of: breathable air, water, power and food. Obtaining breathable air, in the form of oxygen, is fairly easy on the moon. The soil on the moon contains oxygen, which can be harvested using heat and electricity.Water is trickier. Theres now some evidence that there may be water, in the form of b
16、uried ice that has collected at the south pole of the moon. If so, water mining might be possible.If water isnt available on the moon, it must be imported from Earth. One way to do that would be to ship liquid hydrogen from the earth to the moon, and then react it with oxygen from the moons soil to
17、create water. As a side-benefit, the hydrogen can react with oxygen in a fuel cell to create electricity as it creates water.Power on the moon is an interesting challenge. It would probably be possible to manufacture solar cells on the moon, but sunlight is available only part of the time. As mentio
18、ned previously, hydrogen and oxygen can react in a fuel cell to create electricity. Nuclear power is another possibility, using uranium mined on the moon.Food is also a problem. The first thought that anyone on Earth would have is, “Grow the food on the moon” using chemicals like carbon, nitrogen ox
19、ygen, hydrogen, potassium, phosphorous, and so on. To grow a ton of wheat, youll have to import all the chemicals not readily available on the moon. Once the first crop is in, and as long as the colonys population is stable, then the chemicals can be reused in a natural cycle. The plant grows, a per
20、son eats it, and the person excretes it as solid waste, liquid waste and carbon dioxide in the breath. These waste products then nourish the next batch of plants. 【设计意图：基于第一、二步的讨论和样本学习，先讨论、后写提纲和短文。】Step 4 Building core vocabularyT: Learn the following core vocabulary and finish the exercises.1. dust
21、n. fine dry powder consisting of particles of earth, dirt, etc.v. remove dust from (sth.) by wipingdust n. dusty adj. duster n.; dustbin n.2. sheltern. condition of being protected, kept safe, etc.n. structure built to give protectionn. building providing refuge, esp. for homeless peoplev. protect s
22、b./sth., give shelter to sb./sth.shelter v. sheltered adj. 3. constantadj. going on all the time; happening again and againadj. unchanging; fixedadj. firm; faithfulconstancy n. constant adj. constantly adv. 4. investmentn. the use of money to get a profit or to make a business activity successful, o
23、r the money that is usedinvest v. investment n. invent v.; invite v. T: Fill in the blanks with proper forms of the given words.dust, constant, invent, shelter, invest1. _ in hospitals is needed now to match the future needs of the country.1. Investment2. The crisis struck the core of the global sys
24、tem, leaving no country _ from its consequences.2. sheltered3. History is much more than the study of _ old objects and events long past3. dusty4. She thought _ about her family; she might never know what had become of them.4. constantly5. Before bricks _, people built their houses of wood.5. were invented【设计意图：核心词汇学习是贯穿教学的始终任务，教师可以结合本班的学情灵活处理这一步。】Homework1. Watch the micro lesson: Six steps for solving a problem. (Optional)2. Surf the Internet and find more interesting information about how to live beyond the Earth.
