Unit 4 Amazing Science
Topic 1 When was it invented?
Section A
Ⅰ. Material analysis
本课是九年级第四单元第一话题的第一课时。主活动是1a和2。1a 通过Kangkang 和Jane 谈论火箭模型，引入本课的语法：一般过去时的被动语态。1b 是检查学生听1a的效果，1c则是检查学生阅读理解的能力。2重点操练be made of，be made from和be used for。3a 以听的形式让学生加深对2a的句型和1a的语法的理解。3b 让学生能够把本课的句型和语法正确地说出来。总之，本课把句型和语法充分地融合到听、读、说当中。
Ⅱ. Teaching aims
1. Knowledge aims：
掌握本课的重点词汇和短语，初步学习一般过去时的被动语态。
2. Skill aims:
能够在听、说、读、写中正确运用一般过去时的被动语态。
3. Emotional aims: (optional)
鼓励学生要勤思考、有理想、争做未来的发明家。
4. Culture awareness: (optional)
了解其他国家的科技发明。
Ⅲ. The key points and difficult points
1. Key points:
Words and phrases: lock, metal, be made of, be made from, be made in, be used for, be allowed to do sth.
Sentences:What’s it made of?
It’s made from wood.
What’s it used for?
It’s used for locking the door.
I wish I could go into space some day.
I hope your dream will come true.
Grammar: was/were +pp
2. Difficult points：
be made of和be made from的用法辨析。
I wish I could go into space some day.
It’s used for writing on .
Ⅳ. Learning strategies
通过温习一般现在时的被动语态知一般过去时的被动语态，实现从一般现在时的被动语态到一般过去时的被动语态的转换。
通过联系生活实践，来区分be made of和be made from。
在交流中，重在表意，不要担心出错。
Ⅴ. Teaching aids
有关新词的图片/实物（如：数码相机,锁）/录音机/小黑板/PPT。
Ⅵ. Teaching procedures
Stage
| (time period) | Interaction patterns | Teacher activity | Student activity | Remarks | |
| 1 | Revision & lead-in (10mins) | Class activity Group work Group work | Step 1: Let the Ss change the sentences in Group A into present passive voice. T: Look at these sentences and try to change them into passive voice. T: xxx, do you want to try the first one? T: Wonderful! The second one? Example: Group A People speak English around the world. The monkeys eat the bananas. Water washes away the earth. The chemical factory pollutes the river. ... Step 2: Present the sentences in Group B and encourage the Ss to discuss in groups and change them into passive voice, too. T: You have done very well. Now look at this group of sentences. Again, you change them into passive voice, but this time, you will discuss in groups first. T：Any volunteers? T: Which group has different opinions? T: That’s nice. How about Sentence Two? T: Perfect! Example : Group B A P.E teacher in the USA invented basketball in the nineteenth century. The worker cut down the trees yesterday. I made this model plane. Mr. Wang punished him. The cat ate the fish. ... Step 3: Let the Ss observe the two groups of sentences and try to find the differences between them. Move to past passive voice. T: Observe the two groups of sentences in your group and find out the differences between them. T: Hi, class, have you found anything different? T: Your group is wonderful today. Anything else? T: Great! Can you guess what we call the sentences in Group B? T: Yes. You made it. Could you tell me the structure of it? | Change the present active voice into passive voice. S1: English is spoken by people around the world. S2: The bananas are eaten by the monkey. S3:.. Change the past active voice into passive voice. S1: Basketball is invented by a P.E teacher in the USA in the nineteenth century. S2: Basketball was invented by a P.E teacher in the USA in the nineteenth century. S3: The trees were cut down by the workers yesterday. S4: This model plane was made by me. S5: He was punished by Mr. Wang. S6: The fish was eaten by the cat. Observe the two groups of sentences and try to find the differences between them. S1: Group A is in present tense while Group B is in past tense. S2: We use “is” or “are” in group A, but we use “was” or “were” in Group B. S3: 过去时的被动语态。 S4: was / were + pp | 通过复习一般现在时的被动语态来过渡到一般过去时的被动语态。以旧引新、比较学习能让学生更快地掌握新知识。 一定要把学生说出的被动语态的句子板书出来，为后面的教学作准备。 如果学生能正确地表述过去时的被动语态，老师直接板书，如果不能，老师要引导学生总结出来。 |
| 2 | Pre-listening (4mins) | Class activity Individual work | Step 1: Use pictures, real objects or PPT to teach: rocket, satellite, spaceship, metal. T: Look at the picture. What’s it? Step 2: Let the Ss read the statements in 1b and guess the meaning of be made of. T: Now, read the statements in 1b and try to guess the meaning of be made of . T: Who knows the meaning of be made of? Hands up, please! T: Almost right, but not exactly. Anyone else? T: Good boy! You got it! | Learn the new words. Ss: It’s a rocket. Ss:.. Read the statements in 1b and guess the meaning of be made of. S1: 被...制成 S2: 由...制成 | 这几个单词需要老师引导才能学习。 |
| 3 | While-listening (2mins) | Individual work | Let the Ss listen to 1a and do 1b. T: Now, listen to 1a and do 1b. We will check the answers after listening. T: Has everybody got the answers? T: Yes! You please. T: Next one? T:... | Listen to 1a and do 1b. S1: No.1 is F S2: No.2 is F S3:... S4:... | |
| 4 | Post-listening (12mins) | Individual work Individual work | Step 1: Let the Ss read the questions in 1c, and then read 1a and find the answers to the questions. T: Here are 4 questions in 1c. Read them quickly, and then read 1a and underline the answers to the questions. If you finish, raise your hand, please. T: Now, it’s time to check the answers. Please use full sentence while answering. Who wants to answer the first question? T: Perfect answer! Who wants to try the second one? T:... Step 2: Let the Ss read 1a again and underline the passive voice and the key points. T: Now, you will read 1a again. This time, you will underline the passive voice, the difficult points and key points. When you finish, raise your hand. T: First, let’s deal with the passive voice. xxx, please. T: You are smart. Let’s come to the second part: the difficult points. Who has questions? T: Good question! It’s a very important sentence. It’s usually used to express wishes，but it’s unlikely to come true. T: Now, what about key points? Come on! | Read the questions in 1c, then read 1a and find the answers to the questions. S1: Because it’s bad for her health if she spends too much time on computer games. S2: A rocket is used for sending satellites or spaceships into space. S3:... Read 1a again and underline the passive voice and the key points. S1: I was not allowed to play computer games last night. S2: It was made by me. S3: What’s it made of? .... S4: Why “could” is used in the second sentence from the bottom? Can I use “can” instead? S5: be allowed to do sth., be bad for… S6: spend ... on sth., be made of… S7: be used for doing sth…. learn…from…, come true… | wish 表示祝愿、愿望，要给学生强调这个愿望不太可能实现。但不要讲得太深，虚拟语气可以不提。 |
| 5 | Finishing Task 2 (5mins) | Individual work Pair work | Step 1: Let the Ss read the examples in 2 and find the differences between Example One and Example Two. T: Now, read the examples in 2 and find the differences between Example One and Example Two. T: What differences have you found? T: Superb! What else? T: Right! If you can see the material with your naked eyes, you should use “be made of”. If not, use “be made from”. For example, the lock is made of metal. You can see it clearly with your naked eyes. But, as for the paper, you can’t see wood directly with your naked eyes, so you say the paper is made from wood. Now, look at the pictures below the dialogs. See if you can see the material with your naked eyes . T: Let’s check. Computer desk, be made of or be made from? T: Chopsticks? ... T: Well done! How do we decide whether to use a preposition or not? The answer is: if the action is done by the object itself, there is no need to use a preposition, and if not , then a preposition is needed . Step 2: Let the Ss make up similar dialogs in pairs. T: Now, let’s do pair work. Make up similar dialogs. Go ahead! T: I’d like some pairs to act out your dialogs . Which pair ? T:... | Read the examples in 2 and find the differences between Example One and Example Two. S1:“Be made of”is used in Example 1 and “be made from” is used in Example 2. S2: There is a preposition “on” after “write”, but there is no preposition after “lock”. Ss: Be made of. Ss: Be made of. ... Make up similar dialogs in pairs. S1: What’s the computer desk made of ? S2: It’s made of wood S1: What’s it used for? S2: It’s used for putting computers on. | 这个部分分成两步骤来完成较好。第一，帮助学生区分be made of和be made from的用法。第二，如何运用介词。理解这两点，有利于学生构建对话。学生不能解释清楚的老师要补充。老师在此过程中，顺便解释：lock。为了简单明了，老师可以用汉语解释，因为涉及到不少术语，学生难以听懂。 |
| 7 | Finishing Task 3a (5mins) | Individual work
Individual work | Step 1: Let the Ss look at the pictures in 3a to learn the new words laptop and digital, and then listen to 3a and number the pictures. T: Do you know what the picture 1 is? T: Yes, but we call it a laptop. Because we usually put it on the top of our lap while using it. T: How about the picture 3? T: It’s a digital camera. T: Now, you will listen to 3a and number the pictures. T: Check answers! Step 2: Let the Ss listen to 3a again and fill in the table in 3a. T: Listen to 3a again and fill in the table in 3a. T: Now, let’s check the answer one by one. First, laptop. What is it made of? T: What’s it used for? T:... | Learn the new words, listen to 3a and number the pictures. Ss: It’s a computer. Ss: It’s a camera. Ss:.. Listen to 3a again and fill in the table in 3a. S1:It’s made of plastic. S2: It’s used for .... S3:... | |
| 8 | Finishing Task 3b (3mins) | Pair work | Let the Ss read the example in 3b, and then make up similar dialogs in pairs based on the information in the table in 3b. T: First, read the example in 3b, and then make up similar dialogs in pairs based on the information in the table in 3a. T: Good news! I will have a photo with the first pair! Which pair will be the first one? | Read the example in 3b, and then make up similar dialogs in pairs based on the information in the table in 3b. S1: What is a cellphone made of ? S2:It’s made of plastic and metal. S1: What’s it used for? S2: It’s used for making telephone calls . S1:... S2:... | |
| 9 | Summarizing and assigning homework (4mins) | Class activity | Step 1: Let the Ss go over this section and sum up the key points T: We have only a few minutes left. Let’s sum up the key points of this section. T: Let’s begin with grammar. T: What’s the structure of it? T: And key points? Step 2:HMK T: Now, computers are widely used in our daily life. But do you know the history of computers? Find some information about computers and write a short passage. Try to use the past passive voice as much as possible. | Sum up the key points. Ss: Passive voice in the past. Ss: Was / were + pp S1: Be made of , be made from, be used for doing sth. S2: Allow sb. to do sth., be allowed to do sth…. S3: Spend …on sth. S4: I wish…. S5:… | |
When was it invented ?
| Section A | ||
| Words and phrases: rock satellite spaceship metal lock laptop digital be made of come true be used for doing sth. be made from | Grammar: the past passive voice structure: was / were + pp | Sentences: What’s it made of ? It’s made from wood. What’s it used for? It’s used for locking the door. I wish I could go into space someday. I hope your dream will come true. |
