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1、Unit 4 Scientists who changed the worldWelcome to the unit & Reading (I)内容分析：本单元的主题语境是“人与社会”，话题是“科学家、科学发现和科学精 神”。本单元的教学旨在帮助学生认识科学发现的巨大推动作用，理解科学家的 责任担当和科学精神的价值所在。Welcome to the unit板块以视频形式引入单元 主题，简要介绍了两位对社会发展有巨大贡献的科学家；Reading板块以新闻报 道的形式重点介绍了 2015年诺贝尔生理或医学奖获得者屠呦呦在发现青蒿素的 过程中付出的不懈努力，旨在让学生感受科学家身上体现出的可贵品质
2、和精神。本单元卷首的名人名言出自欧文朗缪尔，意为：“科学家的驱动力主要是 好奇心和对真理的渴望。”欧文朗缪尔是美国化学家、物理学家，因其建立的 “表面分子定向说”于1932年获得诺贝尔化学奖。这句话意在说明科学家应保 有一颗好奇心，勇于追求真理。教学目标：By the end of the lesson, the students will be able to:1. learn about two scientists after watching the video;get to know how to read a news report;2. analyze and understan
3、d the language of a news report;discuss and reflect on factors contributing to success;3. write a news report about a scientist.教学重难点：1. Analyze and understand the language of a news report.2. Write a news report about a scientist.教学过程：Step 1 Lead-inQI: What do we refer to when we talk about “scienc
4、e”?bold hypothesis & cautious verificationobjectivity& authoritybe bold & be humbleprecise & poeticuncertainty & (of)certaintyQ2: What do we refer to when we talk about “scientists”？Quotation from Irving Langmuir: The scientist is motivated primarily by curiosity and a desire for truth.【设计意图：紧扣主题，用学
5、生熟悉的话题作为预设教学目标的情境载体导入， 创造生动活泼有趣的课堂氛围，激活学生已有的知识和经验，引入主题。】Step 2 Welcome to the unit1. A video clip: Scientists who changed the worldWhat else do you know about two scientists in the video?2. Yuan Longping has an asteroid named after him. In 1999, the asteroid project team who discovered it decided to
6、 honour this great man for his achievement in developing hybrid rice. The asteroid is called Yuan Longping star”.Steven Hawking fulfilled his lifelong dream of experiencing zero gravity, even though he was wheelchair-bound. His dream came true when he flew in a special zero gravity airplane in 2007.
7、【设计意图：介绍袁隆平和霍金,吸引学生的的兴趣。】Step 3 Pre-readingWhat do you know about the Nobel Prize?Picture: Mo Yan winning the Nobel Literature PrizeStep 4 Fast reading1. Read for the lead of the news report.Tu Youyou has become the first female scientist of the Peoples Republic of China to receive a Nobel Prize, aw
8、arded for her contribution to the fight against malaria, one of the deadliest diseases in human history.2. Read for structure.【设计意图：指导学生通过找主题句快速获取段落主旨，培养学生概括段落大意 的能力。】Step 5 Detailed readingRead for specific information.ProblemsSolutionsThe extracts failed to produce any promising results.Tu Youyou
9、referred to the ancient books of traditional Chinese medicine again, redesigned the experiments and tried extracting the qinghao herb at a low temperature in order not to damage its effective part.Tu and her team could not produce enoughextract because research resources were limited.Tu Youyou and h
10、er team managed to find solutions to the problem, e.g. using household water containers instead of research equipment.Tu and her team did not have sufficient safety data to start trials on patients.Tu Youvou and her team volunteered to test the qinghao extract on themselves.【设计意图：帮助学生梳理文章的关键信息。接下来通过
11、完成表格和流程图，引 导学生学会自主阅读、归纳信息、提炼要点。】Step 6 In-depth readingRead for the transitional sentences.1. Can you find the transitional sentences used in this news report and analyze their functions one by one?Figure out the transitional sentences and their functions.2. Sentences using noun phrases to explain terms.【设计意图：引导学生从写作技巧的角度解读文本。】Step 7 Homework1. Finish Bl on P47.2. Write a news report about another scientist.教学反思