(共65张PPT)
Unit 9 when was it invented
Period Two
What is it
What is it used for (call sb up)
It’s used for calling sb up.
telephone 1876
What are they
What are they used for (see in
the dark)
They’re used for
Seeing in the dark.
battery-
operated
sleepers
last year
What is it
What is it used for (scoop
really cold ice cream )
It is used for scooping really cold ice cream.
heated ice
cream
scoop
a few years ago
What is it
What is it used for (tell the time )
It is used for telling the time.
1788
alarm clock
What is it
1946
microwave oven
What is it used for (heat cold food )
It’s used for heat ing cold food.
What are they
What are they used for
They are used for giving light.
1879
light bulbs
How many other inventions do you know
1.computer
2…….
3……..
4…….
…….
New inventions are invented all the time. Inventions have changed our lives a lot. Most of the inventions are helpful or interesting, but some of them are annoying. For example ,I think the light bulb is helpful,but the alarm clock is annoying.
A: What do you think is helpful/annoying
B: I think ______ helpful/annoying.
Pairwork (3a)
3a
Make a list of five helpful inventions and five annoying inventions.
Helpful inventions Annoying inventions
Example __telephone
1 Example _alarm clock
1
2 2
3 3
4 4
5 5
plane, car
camera
light bulb
paper, elevator
computer, radio
mobile phone
truck
computer games junk food
cigarette
3bWhat do you think is the most
helpful/annoying(令人恼怒的) )invention
Name Helpful
inventions Why Annoying inventions why
Helpful inventions Annoying inventions
Example __telephone
1 Example _alarm clock
1
2 2
3 3
4 4
5 5
plane, car
camera
light bulb
paper, elevator
computer, radio
mobile phone
truck
computer games junk food
cigarette
Useful expressions:
A: What do you think is the most
helpful/annoying invention
B: I think the most helpful /annoying invention is…
A: Why is that
B: Well, it gives/helps people…
Do you think the computer is the most helpful or annoying invention
I think the… is the most helpful invention because it ... It was invented in ... It was invented by ...
I think…the …is the most annoying invention because…
Conclusion:
Inventions Why
1.radio listen to music all day
2.
3.
4.
5.
Imagine that you are alone on a tiny(小的) island. If you can only take five inventions, what would you take Why
Imagine that you are alone on a tiny
island.Choose five inventions you would like to have on the island with you .Tell the group of four what you chose and why. Then give a report.
A: I’d like to have a radio
because I could listen
to music all day.
B: Yes, but it’s not going
to help you leave the
island. I think it would
be better to have…
knife
flashlight
gun
Sample dialogue :
A: I’d like to have a radio because I
could listen to music all day.
B：Yes, but that’s not going to help you leave the island. I think it would be better to have a boat. Then you can leave the island by boat.
A：Maybe you are right.
Groupwork (4: P70)
Then give a report like this:
In our group…would like to
have a radio because he could
listen to music. But …thinks it
would be better to have lots of
food. Then he can have some
things to eat before people come
to save him….
汉译英。
（1）计算机是何时发明的？
（2）谁发明了电灯？
（3）计算器是用来做什么？
（4）你认为什么是最有用的发明？
（5）每天它能够给人们更多时间工作和玩。
1. When was the computer invented
2. Who was the light bulb invented by
3. What’s the calculator used for
4. What do you think is the most helpful invention
5. It gives people more time to work and play
every day.
1.Give a report about 3b.
2.If you are an inwentor,what would you like to invent 一．Imagine that you are alone on a tiny(小的) island. If you can only take five inventions, what would you take Why
Inventions Why
1.radio listen to music all day
2.
3.
4.
5.
Then give a report like this:
（1）In our group…would like to have a radio because he could listen to music. But …thinks it would be better to have lots of food. Then he can have something to eat before people come to save him….
二．Translate:
（1）计算机是何时发明的？
（2）谁发明了电灯？
（3）计算器是用来做什么？
（4）你认为什么是最有用的发明？
（5）每天它能够给人们更多时间工作和玩。Unit 9 When was it invented
Period 2
Ⅰ.Teaching Aims and Demands
1.Knowledge Objects
(1) Key Vocabulary
bulb, light bulb, microwave, oven, microwave oven, island
(2) Target Language
What do you think is the most helpful invention I think the most helpful invention is …
Why is that Because it helps/gives …
2.Ability Objects
Train the students' writing and speaking skills with the target language.
3.Moral Objects
If you are alone on a tiny island, what inventions would you like to have on the island with you
Ⅱ.Teaching Key Points
1.Talk about the helpful inventions and annoying inventions.
2.Guide the students to discuss their opinions on the inventions.
Ⅲ.Teaching Difficult Points
1.Discuss the opinions on the inventions.
2.Use the target language to describe the inventions.
Ⅳ.Teaching Methods
1.Pairwork
2.Groupwork
Ⅴ.Teaching Aids
Some pictures of the helpful inventions and annoying inventions.
Ⅵ.Teaching Procedures
Step 1Warm-up
1.Greetings.
2.Sing a song: The more we get together,the happier we will be.
Step 2 Revision and presentation
1.Play a guessing game : show pictures about some inventions and ask the students to practice speaking.
A: What is it What are they
A: When was/were… invented
B: It was/They were invented by…
A: What is it/are they used for
B: It is/They are used for…
2.According to the game, teach the new words: alarm clock, microwave oven, light bulb.
Step3 Presentation
We have learned these inventions.Now how many other inventions do you know Get students to answer.Then say:New inventions are invented all the time. Inventions have changed our lives a lot. Most of the inventions are helpful or interesting, but some of them are annoying. For example, I think the light bulb is a helpful invention.The alarm clock is an annoying invention. What do you think are helpful inventions/annoying inventions
Step4 Practice
1.3a . Make a list of helpful inventions and annoying inventions
2. Check the answers
Step5 Presentation
1.T shows the PPT.
2.T: Look at these inventions. I think the most helpful invention is the computer.Because it helps people search the information.What do you think is the most helpful invention.Why is that
3. Get students to practice like this:
A: What do you think is the most helpful/annoying invention
B: I think the most helpful/annoying invention is…
A: Why is that
B: Well, it gives people…
Step6 Practice
1.Ask Ss to practice 3b in pairs.
2.Ask several pairs to act it out.
Step7 Have a debate
Divide students into two parts, get them to have a debate:Is the computer the most helpful or the most annoying invention Which team speak more times and more reasonable is the winner.
Step 8 Groupwork
Show the picture of 4 and ask Where is he Do you think it is dangerous for him to stay there alone What do you think is the most imporant to him How can he leave the island
Imagine if you were him ,what would you like to have on the island Get several students to answer as a model.
3.Get the Ss to practice Part 4 in groups. Then get them to give a report.
Step 9 Do some exercises.
1.T: It’s time to do the exercise.(PPT)
Give Ss several minutes to do the exercise.
2.Ask 5 Ss to answer them.
3.T checks the answers.
Step 10 summary
In this class,we’ve learned more about the inventions. And we’ve done much oral practice talking about the inventions.
Blackboard design
Unit 9 When was it invented alarm clock A:What do you think is the most helpful invention Team1: Team2:microwave oven B:I think the most helpful invention is …light bulb A:Why is that B:It helps/gives… Unit 9 When was it invented
【学习内容】 3a, 3b and 4 of Unit 9 When was it invented
【学情分析】本节课是第九单元的第二课时, 学习任务是完成课文 3a, 3b and 4 部分的学习。本单元要求学会谈论重要发明的历史及用途，然后针对各项发明的用处及特点，发表自己的看法，并说明理由。话题一直是围绕着历史上和日常生活中的重要发明，通过使用“Passive Voice”形式的句型，循序渐进地展开讨论。课本设计的活动情景能够自然地引发学生的好奇心，大家积极地投入到话题讨论中，寓教于乐，容易引起学生的兴趣；同时，它也有利于开阔学生的思路，培养创造精神，展开丰富的想象力，人人都能成为“小发明家”。
【本课设计】
我先以一首歌来活跃气氛。再从话题入手，激发学生的兴趣，让学生尽快进入状态。然后利用课件，复习旧知，温习上节课的所学内容，通过呈现的图片导入新单词的教学。在导入新单词的学习过程中，我描述了每一种发明，不仅旨在教学新单词，更利用描述来对学生进行听力训练，同时利用其中的停顿、猜测来提高学生的学习兴趣，使学生尽快融入课堂。然后，再以发明已改变了我们的生活，但其中有些是有用的，有些是恼人的，过渡到对发明表明观点这个环节。在此过程中，我尽力做到词不离句，情景交融，生动形象。我先通过师生间的对话过渡到生生的操练，句型的操练是很有必要性的，让学生两人一组进行操练，接着，我又通过让学生进行小组活动，让学生熟练地掌握本课时所学的内容，提高学生的合作意识，增强学生的团结协作精神。该活动的设计，能减少学生独立完成较大型英语任务的畏难心理障碍，在设计中，通过师生示范和图片的提示为学生搭建平台，使层次较低的学生也能在一个有帮助的平台上，与其他同学一起，顺利完成该项任务。同时，在表明观点的练习后，我又安排了一场辩论，继续深化目标语言的运用，同时也对学生的口语进行了强化训练，拓展了学生的思维。而评价机制的实施运用又让学生明白了自己在本节课的收获以及存在的问题，明确今后努力的方向。另外，我又以发明的确在许多方面给予了我们帮助，尤其当我们独自时，帮助更大过渡到GROUPWORK。一幅大大的孤零零的一个人在岛上的图片吸引住同学们的视线.他在哪？对他来说独自一人身处孤岛最重要的是什么？最有帮助的是什么？他怎样才能离开小岛？如果你是他，你又会带些什么？一系列的问题引导同学们展开激烈讨论，鼓励学生发挥想象力，灵活运用所学句型，各抒己见，并通过讨论过渡到写，进一步强化学生对词汇的掌握，整合所学语句，形成语篇，达到词-句-篇的训练效果。再让学生以报告形式回到说上，进一步提升学生的口语水平。最后对本课的语法重点进行归纳整理，让学生找规律，鼓励他们积极思考，让学生积极主动地学习，然后我设计了适当的练习题，练习题也是围绕本课的重要知识点而设计的，既能培养学生“写”的能力，也可以让他们再次巩固新知。从而检测学生所学情况。
