初中仁爱科普版Topic 1 Pollution has causes too many problems.优质课教案及反思
展开Unit2 Saving the Earth
Topic1 Pollution has caused too many problems.
SectionA
Ⅰ.Material analysis
本课是第二单元第一话题的第一课时。主活动是1a。1a通过对比“West Hill”今昔的环境变化，引出本话题的污染问题，巩固现在完成时与一般过去时的用法及区别。1b要求学生能够听懂一般过去时态和现在完成时态，也就是要分清1b所提及的词语所伴随的时间。1c则是在阅读之后再找出“西山”所发生的变化。2通过观察图片内容，结对编对话，描述污染前后的情况，进一步训练学生口头表达能力和对一般过去时和现在完成时的运用能力。通过本课(1a-2)的学习，培养学生关注环境问题的意识。
Ⅱ.Teaching aims
1.Knowledge aims：
单词、短语和句子：
(1) see sb./sth. doing sth.
(2) There be sb./sth. doing sth.
(3) pour...into
(4) What a shame!
(5) What a pity
语法
(1) 掌握本课的重点词汇和短语，巩固一般过去时和现在完成时的用法和区别。
(2) 能够用一般过去时和现在完成时描述过去和现在的变化。
2.Thinking Quality:
(1) 能听懂描述环境变化的对话，区别一般过去时和现在完成时的用法。
(2) 能理解和运用一般过去时和现在完成时来进行听、说、读、写活动。
(3) 能根据上下文猜测词义，能根据已知知识自己举例
- learning ability:
(1) 在今后的听说练习中能够充分运用精听、范听等听力技巧
(2) 学会用音标、情境记单词，提高学习效率
(3) 学会归纳总结，使学习更有效
4.Culture awareness:
通过课文的学习，让学生了解环境的变化，关注全球的环境问题。
Ⅲ.The key points and difficult points
- Key points:
(1）new words
bee /butterfly /mess /shame /several /pour /waste /villager/ destroy /cut down/ pollute /goodness
(2) phrases and sentences
① see sb. sth. doing sth.
② There be sb. sth. doing sth.
③ pour...into
④ What a shame!
⑤ What a mess!
(4) Grammar:differences between Simple Past and Present Perfect tense.
- Difficult points：
(1) 正确使用there be sth./sb. doing sth.来表达“有某人/物正在做某事”
(2) 能正确地以口头和书面形式区别使用一般过去时和现在完成时。
Ⅳ.Learning strategies
(1) 通过引导学生在听前阅读1b和3，培养学生形成听前熟悉、预测听力材料的习惯。
(2) 通过朗读1a和2，引导学生模仿已有对话，编写新的对话。
(3) 通过1c，培养学生整合对话信息，将对话转换为语篇的能力。
Ⅴ.Teaching aids
PPT、图片等
Ⅵ.Teaching procedures
Stage (time period) | Interaction patterns | Teacher activity | Student activity | Remarks | |
1 | Getting students ready for learning （1min) | Class activity | Greet and talk about the weather. T:Hi,boys and girls! It’s a nice day,isn’t it? Ss:Yes. T:How are you? Ss:....... | Greet and focus their attention on the teacher.
| 通过日常问候，吸引学生的注意力，使学生专注于课堂，同时拉近老师与学生的距离。 |
2 | Lead-in (3-5mins) | Class activity | Let the Ss listen to a song and find out the Present Perfect tense.After that,though a game,review the Present Perfect tense. T:In such a nice day,let’s listen to a song.After that,please tell me what tense can you get?Clear？ Ss… T:OK,who can tell me what you can find? S1:Present Perfect tense. T:Yeah.Excellent. T:Look!Can you tell me how to change these word into Present Perfect tense. Ss:...... T:Who can?Hands up. S:.... T:Good job.Let’s read together. | Listen to the song carefully and get the answer S1:Present Perfect tense. ...... S2:go--went S3:happen-happened S4:change-changed S5:cut--cut S6:destroy-destroyed S7:pollute-polluted | 通过听音乐来吸引学生的注意，同时通过游戏复习现在完成时，为接下来的学习做好铺垫（复习旧知，引出新知），激发学生的学习兴趣，避免单调乏味的讲解单词。
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3 | Pre-listening (5-7mins) | Class activity | Crate a situation about the West Hill.In this process,ss can get into a situation and enjoy the beauty of it.At the same time,learn some new words. T:Just now,we reviewed what we have learned.Now,look at the ppt. T:Who is there? S:Kangkang T:Do you want to know what is he doing? S:Yes T:Oh!Look!It was..... S:Two years ago T/S:Kangkang came to the West Hill......... .... T:Look! Knagkang give you some message. T：The West Hill is so beautiful that I want to take some photos to my friends.Can you help me? S:Yes T:Thank you.It’s very nice of you. T:Two years later,Kangkang and his friends are talking about something.Look!Can you guess? | Ss with Kangkang enjoy the West Hill.At the same time,through situation,they will learn new words. ...... S:Kangkang ...... S:Yes .... S:Two years ago ... S1:bee S2:have a picnic S3:butterfly S4:several S5:mess S6:waste ...... Ss:They are talking about the West Hill. | 根据课文创设情境，学生可以更好地理解课文。同时学习新单词，在教授新单词时，同时呈现单词和音标，让学生运用所学音标自己解 决单词的读音问题，如果学生发音不准，老师要及时更正。根据情境，引导学生大胆的猜测词义和部分难句的意思，为1a中的听力对话扫障碍。在单词学完后通过康康的求助，拍照说出图片英文既巩固了新单词的学习又能够让学生有成就感，更愿意参与课堂。 |
4 | While-listening (10mins) | Individual work
Group work | Step1:Let the Ss listen to 1a twice and do1b alone. T:Listen to the tape carefully and try to mark the words with P or N. … T:Now please check answers in your group. S1:“Beautiful”is in the past. S2:“Butterflies”are in the past. S3:“Dirty”is now. … Step2:Let the Ss listen to 1a again and pay attention to the pronunciation and the intonation.Then practice1a in groups and role play it. T:Read 1a with your group members and act it out. | Listen and mark the words with P or N according to the tape. S1:“Beautiful”is in the past. S2:“Butterflies”are in the past. S3:“Dirty”is now. … Listento1a again and pay attention to the pronunciation and the intonation.Thenpractice1a in groups and role play it. | 本课对话不长，词汇量不大，可以直接在组内核对答案。如果对话较长，难度较大，建议先听两遍后再读，通过读来检查听的结果。
分角色朗读是培养语感，增强自信，提高兴趣的基本方法之一。让学生通过读的方式感知一般过去时和现在完成时的差别。 |
5 | Post-listening (20mins) | Group work
Pair work
Individualwork
| Step1:Let the Ss read 1a aloud and fill the blanks in1c in groups. T:Read1a aloud and fill in the blanks in1c as quickly as possible,and then discuss the answer with your group members. … T:Now check the answer together. S1:a beautiful place S2:lots of flowers and grass S3:… Step2:learn language points Step3:Retell 1a Step4:Let the Ss observe the pictures and study the example in 2 and try to make new dialogs according to the pictures and the given words.Then act out the dialogs. T:Now study the example in 2 and try to make new dialogs with their partners according to the pictures and the given words.Then act out the dialogs. … T:OK,who can try? S1:There were many trees when I visited the hill lastyear. S2:But now the trees have gone. S1:What has happened here? S2:The farmers have cut them down. … | Read and fill the blanks in1c as quickly as possible.
S1:a beautiful place S2:lots of flowers and grass S3… observe the pictures and study the example in 2 and try to make new dialogs according to the pictures and the given words.Then act out the dialogs.
S1:There were many trees when I visited the hill last year. S2:But now the trees have gone. S1:What has happened here? S2:The farmers have cut them down. S1...… | 做完听力练习后，再让学生通过读的方式在具体情况中感知两种时态的差别，并通过相应的任务去掌握它们的用法。
该环节是让学生通过听的方式，继续学习一般过去时和现在完成时的区别，并引导学生关注环境污染的严峻形势。教师要注意在情感态度教学方面的引导。
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6 | Summarizing and assigning homework (3mins) | Group work
Group work | Step1:Sum up the main content of this class and the key points T:Let’s go through what we have learned today.Group1and2,please sum up the new words.Group3and4,please sum up the key phrases and the difficult sentences.Group5and6,please sum up the grammar in this class. | Speak out the key words,phrases,sentencesand grammar points in groups.
| 总结的方法分很多种，根据需要和学生的实际情况安排。该环节处理时，要重点区别两种时态的用法，学生总结后，教师可以适当点拨或者出示相应的习题加以巩固训练。 |
Ⅶ.Blackboard design
Pollution has caused too many problems. SectionA | |
Words and phrase: bee,butterfly,mess, shame,several, pollute/pollution waste,villager,destroy, cut down,goodness, See sb./sth.do sth., See sb./sth.doing sth., Pour sth.into… | Sentences: What a shame!/What a mess! There are several factories pouring waste water into the stream. Everything has changed. |
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