九年级英语|Unit9 When was it invented?|教案

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Unit9 When was it invented
Ⅰ．Teaching Aims and Demands
1．Knowledge Objects
(1) Key Vocabulary : invent, invention, inventor, calculator
(2)Target Language: A: When was the telephone invented
B: I think it was invented in 1876.
2．Ability Objects
(1) Teach the students to use the new words.
(2) Train the students to talk about the history of inventions.
(3) Train the students' listening and speaking skills with the target language.
3．Moral Objects
Many important inventions have changed the world a lot. Do
you know the inventors of them And when were they invented
Ⅱ．Teaching Key Points
1．Key Vocabulary: invent, invention, inventor, calculator
2．Target Language:Talk about the history of inventions.
Ⅲ．Teaching Difficult Points
1．Train the students to talk about the history of inventions.
2．Train the students to understand the target language in spoken conversation.
Ⅳ．Teaching Methods: Listening, Groupwork, Pairwork.
Ⅴ．Teaching Aids: Powerpoint, flash, Some pictures or real objects of the inventions.
Procedures
Warming up by learn about Passive voice (questions and statements)
Passive Verb Formation
(The 1st period)
Teaching Procedures
Step Ⅰ Revision:
Revise the language points in Unit 8. Ask some students to say something about Jimmy and the stories happened . Encourage them to use the Past Perfect Tense and phrasal verbs.
Step Ⅱ presentation
This activity reviews vocabulary and introduces new vocabulary which can be used to talk about inventions.
Some new words:invent, invention, inventor, calculator
We are lucky. We live in the modern world. We can enjoy our lives. If we feel bored. we can watch TV for having fun. If we want to America. We can go there by plane. If we don’t want to wash our clothes by hands. We can use washing machines. What other inventions do you know
Call the students' attention to the five pictures. Point to each picture and let the students tell what it is.Have several different students guess and write the dates on their own books.
Guess:
Which one was invented earlier
I think the was invented before /after the
Ask different students to answer the questions.
Step Ⅲ Listening:
This activity gives students practice in understanding the target language in spoken conversation.
Call the students' attention to the five inventions in the picture. Ask five students to say the names of them. Then ask them to see the five dates with a blank line in front of each.
Then play the recording again. Pause after each important sentence and let the students repeat.
Step Ⅳ Pairwork:
(1) This activity provides guided oral practice using the target language.
Read the instructions and point to the list of dates in Activity 1b.You will be talking about the dates things were invented with a partner.
Write the conversation on the blackboard. Then get the students to practice in pairs, using the information in Activity 1b. Ask several pairs to share their conversations with the class.
(2) Give some inventions and inventors. make a dialogue use the following structures:
A: Who was the _____ invented by
B: It was invented by ______.
A: What is it used for
B: It’s used for ________________
get the students to practice in pairs, using the information given. Ask several pairs to share their conversations with the class.
Step Ⅴ Groupwork:
Give some inventions and inventors .Make a short play and a dialogue with following structures:
When was …… invented
Who was ……invented by
What’s …… used for
get the students to practice in groups, using the information given. Ask several groups to share their short plays and conversations with the class.
Step Ⅵ Homework
Make a survey. Find 4 inventions and look up When, Who and be used for .
Period 2
Step 1 Warm-up
1. Greetings.
2. revision:
Show some pictures of inventions and talk about them.
A: What is it in English
B: It’s…
A: When was it invented
B: It was invented…
A: What is it used for
B: It is used for…
Step 2 practice
1. Learn new words:
useful, annoying
Ask students to give some examples to show what each word means. For example, A vacuum cleaner is helpful. A very loud truck is annoying.
2. Pair work 3a.
Make a list of five helpful inventions and five annoying inventions. Then teacher can ask students to tell the reasons.
T: Is the light bulb useful or annoying
S1:I think it’s useful.
T: Why is it
S1: Well, it gives people more time to work and play every day.
3b. Discuss the opinions about some inventions with the partner like this:
A: What do you think is the most helpful invention
B: I think the most helpful invention is the light bulb.
A: Why is that
B: Well, it gives people more time to work and play every day.
Step 3 Consolidation and Extension
Group work 4
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 what you chose and why.
Maybe you can use the following drills.
I’d like to have a …because I could…
It’s used for…
I think the most helpful invention is …
But that’s not going help you leave the island. I think it would be better to leave…
Step 4 Exercises
Fill in the blanks with the words given:
1.The work _______(finish)tomorrow morning.
2.The books must______(give)back on time.
3.I think the telephone _____ (invent) in 1876.
4.Tea may _______(invent) by accident.
5.The ruler _____(use )since I began my school life.
6.The bikes are used for_____(ride)on.
Step 5 Sum up
Go over the whole lessons.
Step 6 Homework
1、句型转换。
（1）She was seen to come out of the library by him.(变为主动语态)
He out of the library.
（2）When are trees often planted (变为主动主态)
When people often
（3）The League founded in Guang zhou in 1992.(就画线部分提问)
the League
（4）Did the students wear the school clothes a lot (变为被动语态)
the sclool clothes a lot
（5）Kate took good care of the baby yesterday evening.(变为被动语态)
The baby well by Kate yesterday evening.
（6）His aunt bought him a bicycle.(变为被动语态)
A bicycle him by his aunt.
2、汉译英。
（1）计算机是何时发明的？
（2）谁发明了计算机？
（3）计算机是用来做什么？
（4）你认为什么是最有用的发明？
（5）它能够给人们更多时间工作和玩。
Period 3
Step 1 Warm up
1. Greetings.
2. Free talk:
Ask the students to practices talking to each other about some inventions.
A: What do you think is the most helpful invention
B:I think the most helpful invention is…
A: Why do you think so
B: Well, it gives me…
Step 2 Presentation
Step 3 practice
Show some pictures of food and drink. Ask students what they are.
Then ask the students to describe how food tastes. Learn some new words: sweet, crispy, salty, sour, delicious, hot, awful, nice
. Listening brainstorm:
(1)Let students describe how potato chips taste and describe how helpful the potato chips.
(2)Ask: When and where were potato chips invented
Who were potato chips invented by
How were potato chips invented (Let students guess according to the following key word.)
Key words: by accident, customer, restaurant, by mistake.
2. Listening practice
2a. Listen and circle “T” or “F”.
plete the sentences.
Languages points:
in the end
by mistake
by accident
according to
3. Pair work
Finish the task of 2c
A: Do you know that potato chips were invented by mistake
B: I don’t know.
A: They were invented by a chef called George Crum.
B: When was that
A: It was invented back in 1853.
B: Was it an accident
A: A customer sent back his plate of fried potatoes because they were cut too thick. George cut the potatoes really, really thin. And he cooked them for a long time until they were crispy. He sprinkled lots of salt on them so they were really salty.
B: Did the customer loved them
A: Yes, they asked for more. Everyone was ordering thinly-sliced, crispy, salty potato chips.
B: We like them, too.
A: So do I.
Step 4 Sum up
Reading practice
1. Listen to the passage first.
2. Give students a few minutes to read the passage and try to find the answers to the questions.
3. Explain some language points.
Go over the whole lessons.

Step 5 Homework
用动词的适当形式填空。
A: When the Dinosaur World (build)
B: It (build)in 1988.You will see many kinds of dinosaurs in it , Shall we go to see them
A: Yes, I’d love to . But where is the entrance
B: Here, this side door is (use)as an entrance. There’s something wrong with the front door. It’s (lock).
A: Wow, these must be dinosaur eggs. Where they (discover)
B: They (discover)in Sichuan Province.
A: When these must be dinosaur eggs. Where they (discover)
B: They (discover)in Sichuan Province.
A: When these eggs (lay)
B: I don’t know. That must be millions of years ago.
Period 4
Step 1 Warm up
1. Greetings.
2. Free talk
Show some pictures of inventions and ask students discuss pictures and something about what he/she would like best in class.
Step 2 Writing practice
1. Read the instructions to the class and make students look at the sample first sentence of 3b.
2. Explain that students can combine more than one point into one sentence.
3. Ask students to finish in oral English.
Teacher can give an example.
The flying disk was invented by college students. They used a metal pie plate from a bakery in Bridgeport, Connecticut. Students ate the bakery’s pies and then threw the pie plates. Today, there are flying disk clubs, magazines and a festival.
4. Ask students to finish them in their exercise books after class
Step 3 Practice
Pair work: A successful businessperson.
Imagine you are a businessperson. Ask your friend questions about his or her invention. Try to sell your friend’s invention to the class. For example:
A: This is special pen was invented by Zheng Jie. It has three colors and it is used for…
Step 4 Selfcheck
1. Fill in the blanks with the correct word given then make own sentences with these words.
2. Show some pictures of inventions. Ask students to have conversations in pairs. For example:
A: What is it
B: It’s an abacus. Umbrella/a binoculars, camera, bicycle.
A: What is it used for
B: It’s used for…
A: Oh, that’s cool! Who was it invented by
B: It was invented by…
A: What would you like best
B: I’d like…best.
3. Finish the writing task after class.
Step 5 Sum up
Crazy Inventions
Ask students to build their own crazy inventions using paper, cardboard and other materials they may have at home. Have them bring their inventions to class and say something in class next class.
Step 6 Homework
Finish the writing task of Section B 3b and Selfcheck 2.
Period 5
Step 1 Warm up
1. Greetings.
2. Free talk
Talk about some sports in China, especially some popular sports, such as Ping-pong ball, basketball, swimming and so on. For example:
A: Do you like sports
B: yes, I do.
A: Which sports do you like best
B: I like…best.
A: Why…
B: Because…
Step 2 Practice
Section 1 Before you read.
Pairwork:
Show some pictures of sports in China. Rank the sports in the order of popularity.
Step 3 Presentation
1. Give students a few minutes to read the passage Do you know when basketball was invented And ask students to finish the task of Section 3 3a.
2. Learning strategy: Mind-mapping.
3. Try to answer the following questions with the help of the mind-mapping:
Who invented basketball
Why were the Berlin Olympics important for basketball
What is the aim of basketball
Name a professional basketball organization in America.
Step 4 Reading practice
1. Ask students to read the first two paragraphs with the following five questions: What is a popular activity in China
What do people play it for
When was the sport of basketball invented
How many people play basketball
Where has basketball been played
2. Explain some language points in the first
two paragraphs.
3. Ask students to read the third paragraph with the following two questions:
Who invented basketball
What kind of game was basketball at first
4. Explain some language points in the third paragraph.
5. Ask students to read the fourth paragraph with the following questions:
What’s the aim of basketball for players
What’s the backboard used for
What’s the name of the place where players
play basketball.
6. Explain some language points in the four paragraph.
7. Read the last paragraph with the following questions:
When was the first basketball game in history
Why were the Berlin Olympics important for basketball
Do more and more people enjoy playing basketball
Name a professional basketball organization in America.
8. Explain some language points in the last paragraph.
Step 5 Sum up
Go over the lessons and write down the following useful expressions:
travel around…, notice a very popular activity, a much-loved and active sport, be enjoyed by…, for fun and exercise, a little more than…, be played by…, in over 200 countries, be played in…, be invented by…, be born in…, at college, invent a new game, be played indoors, during the long winters, create a game, be played on a hard wooden floor, the safety of …, knock into…, fall down, divide… into…, teach… how to play…, get a ball into…, a net hanging from…, shoot from below…, be used for …, guide…into…, move towards…, throw…to…, on December 21st, 1891, in history, in 1936, in Berlin, an Olympic event, a team from China, take part, used… to help develop the game, at home, since then, rise worldwide, become a more popular sport, dream of becoming famous basketball players.

Step 6 Homework
Writing a passage about something good and difficult about being a basketball player.
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