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1、 How Life Began on The Eart编写人：胡小军 编写时间：2014-3-15 班级： 小组编号： 组名： 姓名： Warming up and reading【学习目标】：1. To learn about the origin of life on the earth. 2. To master the usages of some key language points. 3. To develop the feeling of treasuring the earth and life.【重点难点】：1.了解宇宙科学、地球生命的起源，了解万有引力、黑洞和太空旅行等天
2、文知识，培养学生对科学的兴趣、激发学生探讨科学的热情。2.掌握本单元的词汇和习惯用法。3.学会在日常交际中正确运用指示语。学习方法：自主探究；小组研讨课前自主预习方案【使用说明及学法指导】1.学习天文常见词汇学习，扩展自己的词汇知识。2.运用知识语法填空。Task1: read and remembercosmos宇宙来源:Z|xx|k.Comfixed star 恒星earth 地球evening star 昏星world世界planet 行星Mars 火星aureole 光环milky way银河asteroid 小行星Jupiter 木星eclipse 食solar system太阳系s
3、atellite 卫星Saturn 土星southeast 东南interplanetary行星际的shooting star 流星Uranus 天王星shuttle 航天飞机sky天Mercury 水星Neptune 海王星northeast 东北zenith天顶Venus 金星morning star 晨星northwest 西北Task2：语法填空 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。 China has a fast-growing space program. A_1_（success） Moon missio
4、n would be the third major event in the history 2_ Chinas space program, after the launch of their first orbiting satellite in November 1999 and first manned mission, 3_Yang Li wei orbited(运行) Earth fourteen times on the Shenzhou V on October 15, 2003. The Change program, named after a lovely girl i
5、n a Chinese story who 4_ (take) a magic potion （药）and flied to the Moon, will be a three-part series of missions 5 _ will finish in about 2020. In addition to the orbiter Change 1, the Chinese space agency is planning a mission to land a rover on the Moon, 6_ (hope) to collect material that will be
6、returned to Earth. 7_ (final), these missions may lead to manned expeditions to the Moon - or to the possible 8_ (develop )of a permanent(永久的), manned Moon base. 9_ entire mission series should last about thirteen years, for a total cost of about 14 billion Chinese Renminbi (equal to 1.73 billion U.
7、S. dollars). In addition, China may cooperate with Russia in its Moon exploration program 10_ is tentatively planning on signing a ten-year cooperation agreement in 2007.课堂自主学习方案 要点探究 质疑解惑，合作探究 探究点一： Group discussion Why did dinosaurs die out? Why do you think that humans are the cleverest animals o
8、n the earth? What should people do to protect our earth? (Have a discussion with your group members and make a short speech about 2 minutes)_ _探究点二：Task1:Reading and answering1.What theory do people accept on how the earth began?2.How did water come into being on the earth?3.Whats the significance o
9、f the presence of water on the earth? 来源:Z|xx|k.Com4. How do life develop?5.Are humans nice to the earth? what problem is caused by human beings? Task2: Can you put the order of development of life into a time line?Use the reading to help you. （ ）1 insects and amphibians appeared （ ）2 dinosaurs appe
10、ared （ ）3 the earth became a solid ball （ ）4small plants grew on the water （ ）5 reptiles appeared （ ）6 plants began to grow on dry land （ ）7 the earth was a cloud of dust （ ）8 water appeared on the earth （ ）9 shellfish and other fish appeared （ ）10 the universe began with a “Big Bang” （ ）11 clever a
11、nimals with hands and feet appeared （ ）12 mammals appearedTask3: Can you put the order of development of life into a time line?Use the reading to help you.Paragraph1: Paragraph2: Paragraph3: Paragraph4: Paragraph5: 课后自主反思与测评 课后自主反思 同学们，经过了课前自主预习和课堂自主学习之后，相信你一定有了一些收获吧，是掌握了必须学习的知识点? 或是掌握了一些学习上的技巧与方法?
12、或者还有什么有待改进的地方？在下面动笔写写吧，善于总结的学生才是会学习的学生！这一阶段我学会了这样一些语言知识：句型：_ _ _ 这一阶段我突破了这样一些重难点：_ _ 这一阶段我觉得还需要提高的是：_ _ 答案：Task2：语法填空Successful，of，when，takes ，that ，hoping ，Finally ，development ，The ，and 探究点二：Task1:Reading and answeringWhat theory do people accept on how the earth began?The universe began with a “B
13、ig Bang” that threw matter in all directions, after that, atoms began to form and combine to create stars and bodies.How did water come into being on the earth?见文章第二段或课件来源:学科网ZXXKWhats the significance of the presence of water on the earth? It allowed the earth to dissolve harmful gases into oceans
14、and seas.来源:Zxxk.ComHow do life develop? 见文章第四段或课件Are humans nice to the earth? what problem is caused by human beings? They are putting too much carbon dioxide into the atmosphere too hot to live on.Can you put the order of development of life into a time line?Use the reading to help you.Task2: Can
15、 you put the order of development of life into a time line?Use the reading to help you.10 7 3 8 4 9 6 1 5 2 12 11Write down the main idea for each paragraph.Para1:A widely accepted theory about the formation of the universe.Para2: The formation of the earthPara3: The importance of water for lifePara4: The development of plants and animals on the earthPara5: The arrival of humans and their impact on the earth来源:Z+xx+k.Com第 4 页 共 4 页