《Unit 9 When was it invented》
单元目标与要求 教学目标：1.谈论重要发明的发明时间、发明者和用途。 2.了解薯条,茶和篮球的发明历史。
语言结构：被动语态 语言功能：谈论重要发明的发明时间、发明者和用途 语言目标:When was the car invented? It was invented in1885. Who were they invented by? They were invented by Edison. What are they used for? They’re used for seeing in the dark.
重点词汇及短语：salty, sweet, sour, crispy, pleasant, potato chips, slipper, leaf, fire, scoop, light bulb, microwave oven, abacus, camera, beverage, be invented by, be used for,
by mistake, by accident
教学重点：应用被动语态讨论重要发明的时间、发明者和用途 教学难点：如何描述一项新发明的来历和用途 学习方式：自主合作学习
技能目标：能够谈论发明的历史和用途，能够对生活中的发明 发表自己的看法，能够解决生活问题，设计新发明。 情感目标：充满想象力，善于观察事物面对难题，用积极的态 度解决，发挥创造能力，认识世界，改造世界。
第一课时
??教学内容与分析
?教学内容：Section A 1a-2c ?教学目标：
a. 能够掌握基本单词和词汇 invent, be used for, scoop, adjustable, heel, battery, operate, slipper, light bulb.
b. 能够运用基本句型进行提问。 When was it/were they invented?
Who was it/were they invented by? What is it/are they used for?
??教学重点、难点分析：
?教学重点：单词,词汇和句型。
?教学难点：运用被动语态谈论发明的发明者及用途。 ?? 课前准备
本课时的教学课件以及一些单词，短语卡片。 ?? 教师设计
教学步骤 建议和说明 ↘热身/复习（Warm-up/Revision） ?Greetings. ?Talk about something in unit 8.
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↘呈现/操练（Presentation/Practice）
? Present two pictures of Thomas Edison and a light bulb. T: Look at the picture on the Screen. What's that in English? Ss: ... T: It's a light bulb. (Students read “light bulb” after the teacher repeatedly.)
T: Who invented the light bulb?
Thomas Edison invented the light bulb in 1879. ? Play a short game:
a. Teacher ask four Ss come to the front and give each of them
a card with Thomas Edison, Invented, The light bulb, In 1879 on it. Then ask them to stand in order like the sentence.
Thomas Edison invented the light bulb in 1789.
b. Exchange the order of Thomas Edison and the light bulb and
ask Ss:
Is it right now? Can we say like this?
c. Ask the fifth and sixth Ss with card of Was and By to cut
in line and organize the right sentence.
?Teacher write the three sentences on the Bb and explain the Passive Voice and the Active Voice. Ss read them after the teacher repeatedly.
? Present the inventions of the train and the plane.
T: Talk with your partner about the inventions with the words given by using the Passive Voice and the Active Voice. ?Ask a few pairs to say the dialogues like below: A: Who invented the train/ plane? B: ?
A: When was it invented? B: ?
↘Work on 1a
?T: We know the light bulb was invented after the train.
But it was invented before the plane.
Now let’s look at more inventions: the personal computer, .
the car, the calculator, the telephone and the TV. In what order do you think they were invented.
? Ss work in pairs and talk about their ideas like this:
A: I think the telephone was invented before the car.
B: I think the telephone was invented after the car.
↘Work on 1b and 1c
?Ss listen to the tape twice and match the inventions with the
dates. 爱迪生是众所周知的发明家。学生了解的比较多。
通过游戏来教语法既能活跃语法死气沉沉的课堂，又能让学生乐于接受，牢记于心。
用火车和飞机的发明来呈现学生知道的人比较多，因为社会书上有着方面的知识。
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?Ss do pair work and check the answers with their partners like:
A: When was the telephone invented? B: I think it was invented in 1876. ?The whole class check the answer together.
↘呈现/操练（Presentation/Practice）
?Present a telephone . Make a dialogue with a student like this:
T: When was the telephone invented? S1: It was invented in 1876. T: What is it used for?
T and S1: It is used for talking with people. ?Teacher explain the key sentences:
What is it used for? It’s used for talking with people. ?Ss do pair work and talk about other inventions like the model.
?Ss act out their dialogues in front of the whole class.
↘Work on 2a and 2b
?Present the three inventions shoes with adjustable heels, battery- operated slippers and heated ice cream scoop in the dialogue.
?Listen and number the inventions in the order.
?Listen again and match the items in columns A, B, and C. ?Check the answers like this:“The shoes with adjustable heels were invented by Jayce Coziar and Jamie Ellsworth. They are used for changing the style of the shoes.”
↘Pole play
Ss talk about the inventions in the dialogue. They can use their own names to substitute the difficult names. ① What is it/are they? It is/They are ... ② Who was it/were they invented by?
It was/They were invented by ...
③ What is it/are they used for? It's/They're used for?
↘Homework
?Listen to the two conversations in 1b and 2a and imitate. ?Surf the internet and find more inventions. Introduce them to
听力材料生词很多，先呈现新单词扫除一些障碍。
对话中复杂、难读的人名，给学生造成很大的障碍。教师可以有意识地替换成班级学生的名字，学生朗读更容易，学习气氛更活跃。
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the whole class ,using:
It was/They were invented by _____________. It was/They were invented in _____________. It is/They are used for ________________.
Blackboard Design
Unit 9 When was it invented? Role play: Who invented the light bulb? A: What is it/are they? Edison invented the light bulb in 1879. The light bulb was invented by Edison in 1879. B: It is/ They are ... A: Who was it/were they invented by? A: When ?? B: I think .... A: What is it used for? B: It’s used for talking with people. B: It was/They were invented by ... A: What is it/are they used for? B: It's/They're used for…
第 二 课 时
?? 教学内容与分析：
?教学内容： Section A: 3a-4
?教学目标：针对各项发明的用途和特点，发表观点并陈述原因。 ?? 教学重难点：
?描述各项发明的用途并说明原因。 ?? 课前准备： ? 本课时的课件 ??教学设计：
教 学 步 骤 建 议 与 说 明
↘热身/复习（Warm-up/Revision）
?Greetings.
?Do duty report and check their homework.
↘ 游戏（Guessing game） Teacher hold a box with a lot of inventions in hand. 学生仔细听并猜测他
们的发明。这个环节能够Divide the Ss into A and B two groups. One student
检查学生完成作业的情from group A ask some questions :
况，巩固第一课时的重要
Eg: ① Who was it/were they invented by?
语言点，以游戏娱乐的情
When was it/ were they invented?
景完成课前复习。
② What is it/are they used for?
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③ Is it/Are they used ...?
about the invention, One student from B who has the invention answer them. If A can guess the invention, he can get the invention. A and B take turns to guess. At last, the group who has more inventions is the winner.
↘呈现/操练（Presentation/Practice）
? Make a list of the inventions at school and home as more as you can, e.g. bike, bag, pencil, batteries, etc.
Inventions at school: ________________________. Inventions at home: ____________________________. ?Divide your inventions into two groups: Helpful inventions:__________________________. Annoying inventions:_________________________
↘Work on 3a and 3b
? Pair work: Discuss your opinions with your group. A: What do you think is the most helpful invention?
Why?
B: I think the most helpful invention is the light
bulb.
Because it gives people more time to work and play every day.
? Fill in the form: make a list of at least five helpful inventions and annoying inventions and give your reasons. 5 helpful Why 5 annoying Why inventions inventions
让学生在自己的身边寻找更多的发明就更能体会什么发明是有帮助的，什么发明是惹人烦的。
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