译林版高中英语选必二Unit3 Reading (I) 教案(名校)

Welcome 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“医学进展、疾病和健康”。Welcome to the unit板块是关于不同职业的医务工作者的一组图片，激发学生对本单元的学习兴趣；Reading板块是一篇演讲稿，介绍了基因组编辑这一尖端医学技术的发展状况和应用范围，并分析了基因组编辑技术的潜在问题，旨在培养学生的辩证思维能力和严谨的科学态度。

 教学目标：

By the end of the lesson, the students will be able to: 1. identify different jobs of medical professionals;

2. talk about their understanding of medical professionals; 3. talk about the benefits of keeping fit for life;

4. have a better understanding of the new possibilities that gene research can bring to human life and health care;

5. understand the relationship between genetic markers and human lifespans; 6. explain their attitudes towards “designer babies”.

教学重难点：

1. Talk about their understanding of medical professionals;

2. Have a better understanding of the new possibilities that gene research can bring to human life and health care;

3. Explain their attitudes towards “designer babies”.

 教学过程：

Step 1 Lead-in

Can you name the benefits of keeping fit for life?  To make ourselves energetic  To keep us in good condition  To get doctors away  To keep a nice figure  To build a strong body  To keep a good mood

 To improve your willpower and physical strength  ......

【设计意图：引导学生探讨健康生活的好处，引出单元话题。】

Step 2 Welcome to the unit

1. What jobs are shown in the pictures? Write the letters in the boxes.

2. Would you like to be a medical professional? Why or why not?

【设计意图：激发学生对医疗健康这一话题的兴趣，为随后的Reading板块的学习作必要的热身准备。】

Step 3 Pre-reading

What advances in medical science have you heard about?  Cancer Nanotherapy 癌症纳米疗法

 Brain-Machine Interfaces大脑—机器交互界面  Wireless medical devices无线医疗设备  Genome Editing基因组编辑  …

【设计意图：引导学生关注医学发展这一话题，为文本的学习做好铺垫。】

Step 4 Watching a video about Genome Editing

【设计意图：帮助学生更好地了解基因组编辑这一话题。】 Step 5 While-reading

Read the lecture transcript and complete the chart below with the main idea of each paragraph.

【设计意图：指导学生通过快速阅读快速获取段落主旨，培养学生概括段落大意的能力。】

Step 6 Detailed reading

 Read Para.2 and answer the following questions.  Why are genes critical in shaping our lives?

 What information does our personal genome carry?  Read Para.3 and fill in the blanks.

 Read Para.4 and answer the following questions.

 What are the specific examples listed for the usage of genome editing?  What are the questions that arise about how to use it appropriately?  How can we keep the technology from running wild?  Read Para.5 and answer the following question. What is the lecturer’s attitude toward genome editing? A. Disapproving B. Doubtful C. Neutral D. Supportive Answer: D

【设计意图：帮助学生梳理文章的关键信息要素。接下来通过完成一些问题，引导学生学会自主阅读、归纳信息、提炼要点。】

Step 7 Post reading

1. The lecturer mentions that one day we will be able to create “designer babies”. What do you think of “designer babies”?

 A sample answer: I don’t think we should design babies unless it is because of

serious physical or mental health concerns. There is no need to design a baby if its parents are perfectly healthy. Natural gene selection ensures diversity among our species, so if “designer babies” become the norm, the diversity level will drop. Over time, this could lead to the majority of people being born with similar intelligence levels, similar physical features and perhaps, even similar

personalities. Humans could evolve into “super-beings”, which some people may

believe to be good for us, but interfering with our natural evolution could result in disaster. I don’t think we should take the chance.

2. What controls can we put in place to make sure that genome editing will work to our advantage?

 A sample answer: Governments around the world should work together to make

laws and regulations about when genome editing can and cannot be used. First, these laws and regulations should cover various aspects of genome editing, such as ethical issues and security, and they may have to be introduced at multiple levels—global, national and even regional. Second, genome editing equipment needs to be strictly controlled so that it does not get into the wrong hands. Finally, governments, scientists, stakeholders and the public need to work together to enforce appropriate usage of genome editing. The application of these laws regarding genome editing will only be successful if all parties concerned cooperate. 【设计意图：引导学生辩证地看待基因组编辑技术，从而更好地培养学生理性思考的能力，帮助其发散思维，对疾病与健康有更深层次的理解和思考。】

Step 8 Homework 1. Finish B1 on P33.

2. Surf the Internet and learn more about genome editing.

 教学反思