book2 unit3 computers01
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Unit 3 Computers
Period 1:A sample lesson plan for reading
(WHO AM I?)
Aims
To talk about computer
To learn the history of the computer
To know the use of the computer
Teaching important points:
Train the students’ reading ability—skimming and scanning.
Let the students’ know the development of the computer
Master the words related computer
Teaching difficult points:
the words related the computer
know the ablities of the computer
the useful expressions
Procedures
I. Warming up
Warming up by talking about computer
Look at the pictures on page 17. What are they? What do they have in common? Yes, they are computers. Then what is a computer?
A computer is a machine which stores knowledge in its memory and does calculations on that knowledge. This knowledge is stored in symbols; it is called data. A computer usually has a monitor to show results. However, some computers can speak; these computers can be used for voice mail.
A computer frequently requires a boot device. The boot device contains the computer’s operating system and data. Computer programs can be installed onto a computer. Some people think that computers are less useful if they do not have access to the Internet. They think this because the Internet allows the computers to send and receive data and email across the world.
A computer is now almost always an electronic device. It usually contains materials which are toxic; these materials will become toxic waste when disposed of. When a new computer is purchased in some places, laws require that the cost of its waste management must also be paid for. This is called product stewardship.
In some countries old computers are recycled (melted down) to get gold and other metals. This is dangerous, because this procedure releases the toxic waste into the water and soil.
Computers become obsolete quickly. Very often they are given away and new ones replace them within two or three years. This makes the problem worse. Computer recycling is thus common. Many projects try to send working computers to developing nations so they can be re-used and will not become waste as quickly.
Step2
1. Listening and reading to the recording of the text WHO AM I?
Turn to page 18 and listen and read to the recording of the text. Pay attention to the pauses, pronunciation and intonation of the native reader.
2. Reading aloud and underlining expressions
Now we are to read the text once again and underline all the expressions in the text. Put them down into your notebook after class as homework.
Collocations from WHO AM I?
begin as…, a calculating machine, be built as…, follow instructions from…, sound simple, at the time, a technological revolution, write a book, make…work, solve problems, become huge, had artificial intelligence, go back to…, the size of…, go by, change size, becom e small and thin, get quick, stand there by oneself, be connected by…, share information by…, talk to…, bring…into…, deal with…, communicate with…, serve the human race
3. Reading, identifying and settling
Attention, please! It is time to skim the text one more time and identify the difficult sentences. Try analyzing the structures of the difficult sentences and discuss them among your group members. You may also put your questions to me for help.
Chat （online）（在线）聊天
To chat is to talk about ordinary things that are not very important. You can chat to one person or to
many people. People also use this word now for parts of the Internet where we can talk with many different people at the same time. Usually, you chat on the internet in a chat room or messaging service like AOL(American On-Line) Instant Messenger (AIM), Yahoo Messenger, or MSN Messenger.
4. Reading and transferring
Scan the text for information to complete the table below, describing the development of computer.
IV. Closing down by doing comprehending exercises
Turn to page 18 and in pairs do the comprehending exercises No. 1 and 2.。
