Unit 5 Look into Science Lesson 29 DNA—The Story of You 教案（表格式）

周 次 上课日期 月 日---- 月 日 主备教师
课 题 Lesson 29　DNA—The Story of You 课 型 New lesson 课 时 2
教学模式 小组合作学习
教学目标 知识与能力：1. New words and phrases: DNA,blueprint,general,complex,twin,repeat,pattern,identify,related,grandson,granddaughter, struction; in general, xcept for, e related to, illions of。掌握重点句型:①In general, blueprint is a drawing that shows how to put a house together with many different parts.②But building a living thing is far more complex than building a house过程与方法：Reading, discussing,practising in groups in different ways .情感、态度、价值观:Through learning this lesson, learn some knowleadge of DNA.
教学重点 New words and phrases, the meaning of the text.
教学难点 能够用英语向他人介绍自己所知道的有关DNA的知识。能够理解课文内容并回答课后的问题。
教学内容及过程 集备意见及 个案补充
The first periodStep 1.Analysis of the student.Homework check.StepⅠ.Lead inT:Hello, class. Today we’ll learn Lesson 29.(The teacher shows two pictures on PPT.)Please look at the pictures. Are they look the same Are there differences between them S1: ...T: Why do some students look different And why do cousins look similar Ss: Because of DNA.T:Well done. Now let’s learn Lesson 29: DNA—The Story of You.StepⅡ.PresentationThe teacher shows the new words on PPT. Ask students to try to read these words. The students follow the teacher three times. Then give the students five minutes to remember the words. Let students spell and read them one by one.StepⅢ.Reading1.Read the text aloud.Please read after the video and you should pay more attention to your pronunciation.2.Careful reading. Read the lesson again and answer the questions. Show Let’s Do It! 3.Read the text and find out main phrases and sentences.·in general ·except for ·be related to ·billions ofStepⅣ.Summary:Let the SS write down the important words and expressions.The second periodStep 1.Homework check.Step2. Revision. Revise the new words of this lesson.Step 3. Reading. Read the text in a groupStep 4. Listen to the text again. Students read after it.Step 5. Important notes:1.do with与deal with（侧重处理的方式、方法）与疑问词how连用。2.in general“一般而言,概括说来”，常置于句首,也可用generally speaking。3.be different from与……不同; be different in…在……上不同。4.living为形容词，意为“活着的,活的”,常作定语。5.far为副词，修饰形容词和副词的比较级，表示程度，如，even/ rather/much/ a little/bit/a lot等等。 6.except for意为“除……之外”，它要求排除的是不同类的。【辨析】 except for,except,besides,but7.cause为及物动词,意为“引起,导致,发生”，后面可接双宾语，也可接动词不定式作宾语补足语。cause作名词,意为“原因、起因”与of连用。8.be related to意为“和……有联系”。relate为动词，与to或with搭配。Step6. Task (No 4.Let’s Do It)Step7. Finish “Let’s Do It!”Step8. Summary
作业布置 Finish the exercise book and the practice.Copy the new words and phrases twice.Remember the key points
板书设计 Lesson 29　DNA—The Story of You·in general ·except for ·be related to ·billions of ·how to(疑问词+不定式） · far more complex ·be related to
课后反思
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