李晓浏公开课GeneralStudies4Bchapter5

1、Teaching Period Plan Teaching planner李晓浏Teaching executor李晓浏Teaching materialGeneral Studies 4BChapter 5 Prevention of computer virusesTeaching aimsTo learn about some computer viruses.To learn about how computer viruses spread.To learn the preventive measures against computer viruses.Key pointsTo l

2、earn about how to prevent computer viruses.Difficult pointsHow to prevent computer viruses.Teaching aidsOver-head Projector, Powerpoint, pictures from the textbookTeaching approachDirect method, Inductive methodTeaching ProceduresPersonal ViewStep 1 Warming-upa. Greetingsb. Say:I bought a laptop two

3、 months ago. Recently I found it had become slower and slower like an old man. Do you know what was wrong with my computer?( Some computer viruses might have attacked the laptop.)Step 2 Presentation 1. Pretend to be surprised and say: Do you mean my computer has got sick? Doctors, can you guess the

4、other symptoms of my laptop? What kinds of harm can computer viruses cause?2. Encourage the pupils to say: Cause the computer to shut down or restart itself. Slow down the computer; damage the hard disk drive of the computer. Erase or change information The mouse and the keyboard go out of control.

5、Unusual messages pop up.3. Say: Weve talked so much about computer viruses. Can you tell me what computer viruses are.Teaching ProceduresPersonal View (Conclusion: Computer viruses are harmful programs that cause damage to personal computers and networks. )Step 3 Finding Out (1)1. Say: It seems that

6、 my computer is getting seriously ill. But how did it get infected by the viruses? And when?2. Discuss in groups: Open infected attachments in e-mails. Download infected files from the internet. Open infected files. Browse infected websites.Step 4 Finding Out (2)1. Say: Oh, my God. Computers get inf

7、ected with viruses so easily. What should I do to protect my computer and the information on it? Do not use pirated software. Install anti-virus programs and update the virus definitions. Scan files for viruses before opening them. Scan all software and files downloaded from the internet. Do not ope

8、n e-mail attachments from unreliable sources Scan your computer regularly.2. Ask: Which is the most common way that computer viruses are spread?Step 5 More to discuss aboutDiscuss about the following topics:1. Who produces the computer viruses? (Hacker)2. Why do they design the computer viruses? Some people like excitement. Some use computer viruses to express their viewp