Giáo án Tiếng Anh 8 - Units 15: Computers

Unit 15: computers
I. Points: By the end of the lesson Ss will be able to 
- express opinions
- agree and disagree
- complete a flow chat
- write a set of instructions
II. Language focus:
1. Grammar:
- Present perfect with ‘yet’ and ‘already’
- Comparison of present perfect and past simple
2. Vocabulary:
(to) print
(to) be under guarantee
(to) have access to a computer
(to) be restricted to
(to) insert
(to) remove
the manual
change
monitor screen
out put path
entertaining
(to) jam
(to) adjust
(to) make requirement for
(to) be skeptical about
 (to) get a degree
(to) press
(to) flash
button
freshmen power button
monitor
challenging
(to) connect
(to) store
(to) click
coin
paper input tray
amusing
III. Teaching aids: tape, cassette, pictures, photographs, realia, book, board
IV. Teaching procedure:
Unit 15: computers
Lesson 1: getting started + Listen and read P.138-139
* Reading the dialogue to understand the main ideas and practicing computer vocabulary
1. Warm up:
Brainstorming (Getting started)
Things computers can help us
E-mail 
saving time
(saving time, e-mail, storing information, relaxing, traveling around the world, enriching knowledge)
2. Presentation:
Pre teach
(to) print: in
(to) jam: tắc nghẽn
(to) connect: kết nối
(to) be under guarantee: đang được bảo hành
the manual: sách chỉ dẫn, cẩm nang
Presentation dialogue: Listen and read P.138-139
Set the scene: “Mr. Nhat bought a computer from a store in HCM City. At the moment, his son Nam, wants to print a document but he can’t. Listen and tick T or F”
T/ F statements
Ss listen to the conversation and tick T or F
The computer isn’t working.	F
His father can’t help him to repair it.	T
They have to telephone the store in HCM City for help. T 
Ss practice the D in pairs and do “Listen and read 2 P.139. T explains the words ‘fact’ and ‘opinion’ to Ss.
Key: Fact: a, e, f Opinion: b, c, d
Model sentences:
S1: Have you turned it off yet?
S2: Yes. I have already done it.
Concept checking
3. Practice
Word cue drill
Ss use these cues to make similar Ds:
printer/ not/ work/ turn it on/
printer/ not print/ connect
mouse/ not/ work/ check the plug/
computer/ not/ work/ plug/ it in/
Example exchange:
S1: The printer isn’t working.
S2: Have you turned it off yet?
S1: Yes. I have already done it.
4. Homework: 2 P. 90-91, 4 P. 92
Unit 15: computers
Lesson 2: speak + listen P. 139-141
* Expressing and responding to opinions about things.
1. Revision:
Matching
I like
I don’t like
I think
I don’t believe 
Neither do I
You are right
So do I
I agree
T has Ss look at 
2. Task 1
* Pre speaking:
Pre teach
entertaining: thú vị
challenging: mang tính thách thức
amusing: vui
monitor: màn hình
(to) adjust: điều chỉnh 
Describe the Pics P. 139
Ss work in groups to tell one another about the adjs for each Pic (use the pics on P. 139 and the adjs on P.140)
T elicits the As from Ss
a.	 - Learning to drive a car is challenging.
	- Driving a car 
	- If you don’t learn to drive fast
b. 	- Reading a comic book
	- Looking at the drawing in comic books 	
	- Comic books
c.	- Walking in the rain 
	-The rain 
	- I like walking in the rain 
d.	- I don’t like foreign food 
	- Hamburgers, soda and French fried are 
* While speaking:
 Example exchange:
S1: I think learning to drive a car is difficult.
S2: I agree with you. And I think it’s also interesting.
Ss work in pairs to express their ideas about the activities above.
T monitors and gives help if necessary.
3. Task 2
Pre speaking:
Ss read the D Speak 2 P. 140
T focuses on how to express their ideas (I’m having , what’s wrong with , You didn’t )
While speaking:
Ss use the information from the table on P. 140 to make similar Ds
4. Post speaking:
Tell your classmates one problem you or someone else had with the computer and the solution.
5. Task 3
 * Pre listening:
Pre teach
(to) insert: đưa vào, chèn
(to) press: nhấn, nhấn phím
button: nút bấm
coin: tiền xu
change: tiền lẻ
(to) indicate: chỉ, cho biết
Set the scene: How to buy a drink from a machine
T has Ss look at the flow chart on P. 141 and answer the Qs:
a. What does the flow chart show you? (How to buy a drink from a machine)
b. What do the circles indicate? (a starting or stopping point)
c. What do the triangles indicate? (Qs)
d. What about the ovals? (As)
e. How many Qs do you have to complete? (2) 
Prediction:
Ss look at the chart and predict the Qs (a, c,) and the stopping point (d)
* While listening:
Ss listen to the tape and check their predictions
Ss listen to the tape again and correct their predictions if necessary
Ss share their As with their partner
T elicits the As and the correction from Ss if necessary
Key: 
Do you have the correct change?
Yes.
What do you want to drink?
Take it.
Tape transcript
	Computer programmers use flow charts to help people understand how events are sequenced. All the shapes on this chart have a particular meaning. For example, the circles indicate a starting or stopping point, the triangles are questions and the ovals are answers.
	This flow chart shows how to get a drink from a machine. It shows that the first step is to find a machine. Next, ask yourself if you have the correct change. When the answer to this question is “yes”, ask yourself what you want to drink, for example, lemon soda. Finally, insert the coins and press the button to choose the drink you want. Once the drink appears, you may take it from the machine.
6. Post listening:
Chain game
What are the steps to buy a drink from a machine?
Ss look at the flow chart and take turns to play the game.
First find a machine
Then, ask yourself if you have the correct change.
Next, if you have, ask yourself what you want to drink.
After that, insert the coins and press the button.
Finally, take the drink when it appears.
Write it up
Ss write about the steps to buy a drink from a machine in their notebooks.
5. Homework: 3 P. 91-92, 7 P. 94-95 
Unit 15: computers
Lesson 3: read P. 141
* Reading the text about the usefulness of computers to understand the details
1. Warm up:
Substitution box: Ss look at the words in the box and write as many sentences as possible
can these without very
be daily say computer used
 are in useful boring
would life people that ?
Suggested answers
- People say that computers are useful in daily life.
- These computers are useful daily.
- Without computers life would be boring.
- Are these computers in daily life?
2. Pre reading:
Pre teach
(to) store: lưu trữ
(to) have access to a computer: có đường dẫn đến một máy vi tính
(to) make requirement for: yêu cầu
(to) be restricted about: giới hạn
(to) be skeptical about: hoài nghi
(to) get a degree: có bằng cấp
freshmen: những sinh viên năm thứ nhất
Pre question:
Why can we say computers are useful?
3. While reading:
Ss read the text to answer the Q
Key:
We can say computers are useful because they 
store information
send and receive messages
help Ss discuss their lessons
help Ss get a degree without being on campus
T/ F statements: Read 1 a- e
Ss read the text again and decide if the statement is true or false
Key: a, b, c, e, f (T) d (F)
Comprehension Qs: Read 2 a- e
Ss work in pairs to ask and answer the Qs
T elicits the answers from Ss
Key:
It has no library. All the information normally found in a library is now stored in the university’s computers.
All the information normally found in a library or messages normally found on a bulletin board.
A computer and a telephone (line)
With a bulletin board on the internet, a great number of people (over 20 million) can get access to the bulletin and exchange information quickly.
(Ss; answers)
4. Post reading:
Personalization:
Does your school have computers?
Who teaches you computing at school?
Do you learn to program or just to type a document?
What do you think about computer science class?
5. Homework: 1 P. 90
Unit 15: computers
Lesson 4: write P. 142-143
* Giving Ss practice in writing a set of instructions on how to use computers.
1. Warm up:
Jumbled words: these words belong to computer field 
screen, monitor, power, printer, button, plug
2. Pre writing:
power button: nút mở điện
paper input tray: khay để giấy vào máy
monitor screen: màn ảnh máy vi tính
output path: lối/ đường ra 
(to) remove: lấy/ cất đi
(to) flash: chiếu sáng, hiện ra
(to) click: ấn phím chuột, nhắp chuột , click chuột
Matching: (Pics and words)
Ss look at the words given and the Pics Write 1 P. 142, work with a partner and do the matching
T elicits the As from Ss
Key: a, 3; b, 1; c, 6; d, 2; e, 4; f, 5 
Picture and word cue drill Write 2 P. 143
Ss look at the Pics and the words on P. 143, and then work in groups to practice giving the instructions on how to use the printer
T monitors and helps
3. While writing:
Ss write the instructions in their NB Write 2 P. 143
T moves around, takes notes of Ss’ typical mistakes
Key: 
Plug in the printer and turn on the power.
Remove the old paper and load the new paper in the paper input tray.
Wait for the power button to flash.
Have the pages appear on the computer screen.
Click the printer icon on the screen and wait for a few seconds.
The printed paper will come out of the output path in a minute.
4. Post writing:
T writes Ss’ mistakes on the board and elicits the correction from Ss.
5. Homework: 5 P. 92-93
Unit 15: computers
Lesson 5: Language focus 1-4 P. 144-145
* Revision of present perfect tense and comparison of the present tense with the simple past tense.
1. Revision:
“yet” or “already”: T remind Ss of how to use the present perfect tense with ‘yet’ and ‘already’ 
Situation: S1 is working with computer. She wants to print some documents. But she can’t have the pages appear on the computer screen. She asks S2 for help, S2 wants to check if S1 has clicked the computer icon on the screen.
	S1: I can’t have the pages appear on the screen.
	S2: Have you clicked the computer icon on the screen yet?
	S1: Yes. I have already done it.
	S2: There must be something wrong with the computer. I’ll help you.
Finished and in completed actions with the present perfect tense
Situation 1: I went to Sapa last year à I have been to Sapa.
Situation 2: She started working with the computer in the early morning. She’s working with the computer now à She has worked with the computer since early morning.
Concept checking
The simple past and the present perfect
T reminds Ss of the difference between the simple past and the present perfect
(When/ How long)
2. Practice:
Role play: LF 1 P. 144
Ss work with a partner read the situation in LF 1 P. 144 and play the role of Ba and his mother to complete the dialogue
Key:
Ba: I have finished it already
Ba: I haven’t cleaned and tidied it yet.
Ba: I have (already) turned it off already
Ba: I’ve already called and told her to have lunch with us
Word cue drill: LF 2 P. 144-145
Ss read the information about Departures and Arrivals, then work with a partner to ask and answer Qs about lights
 Example exchange:
S1: Has the flight to Vientiane departed yet?
S2: Yes. It has already departed.
S1: Has the flight from Los Angeles arrived yet?
S2: No. It hasn’t arrived yet.
Grid: LF 3 P. 146
Ss work with a partner to decide if the sentence is a finished or incomplete action
Key:
Finished action: a, c, e, f incomplete action: b, d, g
Gap fill: LF 4 P. 146
Ss work in pairs to complete the dialogues
Key: 
Have  seen ; did  see; saw
Haven’t had
have been
have  heard
happened
had
felt; broke
has  arrived; has; 
did  arrive - arrived
T focuses on the difference between the simple past and the present perfect.
3. Homework: