**Lesson Plan: Data Processing for Senior Secondary 3**
**Topic: Computer Virus**
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**Objective:**
By the end of this lesson, students will be able to:
1. Understand the definition and general knowledge of computer viruses.
2. Identify various types of computer viruses and their characteristics.
3. Recognize the symptoms of a virus-infected computer.
4. Discuss methods of preventing and removing computer viruses.
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**Materials Needed:**
- Whiteboard and markers
- Projector and computer for presentations
- Handouts with key information
- Computer systems for practical demonstration
- Internet access for research activities
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**Lesson Duration:**
- Total time: 80 minutes
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**Lesson Structure:**
### Introduction (10 minutes)
1. **Greeting and Attendance** (2 minutes)
- Briefly greet the students and take attendance.
2. **Lesson Introduction** (8 minutes)
- Start with a short discussion on the importance of computer security in daily life.
- Pose an intriguing question to the class: "How many of you or someone you know have experienced a virus on their computer or smartphone?"
- Introduce today’s topic: Computer Virus.
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### Main Content (50 minutes)
**1. Definition and Importance of Computer Virus** (10 minutes)
- Define what a computer virus is.
- A computer virus is a malicious program designed to replicate itself and spread to other computers usually with the aim of causing harm.
- Explain the significance of understanding and preventing viruses in the modern digital age.
**2. Types of Computer Viruses and Their Characteristics** (15 minutes)
- Discuss different types of viruses:
- Boot Sector Virus
- File Infector Virus
- Macro Virus
- Polymorphic Virus
- Resident Virus
- Provide examples and characteristics of each type using a PowerPoint presentation.
- Distribute the handout listing these types and their characteristics for students to keep.
**3. Symptoms of a Virus-Infected Computer** (10 minutes)
- Highlight common symptoms:
- Slow computer performance
- Frequent crashes and errors
- Unexpected pop-up messages
- Files being deleted or corrupted
- Applications behaving abnormally
- Show a short video clip demonstrating these symptoms.
**4. Prevention and Removal of Viruses** (15 minutes)
- Discuss preventive measures:
- Regularly updating software and operating systems.
- Installing reputable antivirus software.
- Avoiding suspicious email attachments and downloads.
- Using strong and unique passwords.
- Teach basic virus removal techniques:
- Running a system scan with antivirus software.
- Booting the system in safe mode.
- Restoring the system to a previous restore point.
- Conduct a practical demonstration on a computer system.
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### Activity (15 minutes)
- **Group Activity: Research and Presentation**
- Divide students into small groups.
- Each group will be assigned a specific type of virus to research.
- Each group will prepare a short presentation (5 minutes) on their assigned virus, including real-world examples, symptoms, and preventive measures.
- Allow groups to present their findings to the class.
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### Conclusion (5 minutes)
1. **Recap and Q&A** (3 minutes)
- Summarize the key points discussed during the lesson.
- Encourage students to ask questions and provide answers or clarifications.
2. **Homework Assignment** (2 minutes)
- Ask students to write a brief essay on how they can protect their personal devices from computer viruses and submit it in the next class.
- Provide clear instructions and due date for the homework.
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**Evaluation:**
- Assess the students’ presentations for understanding and clarity.
- Review and provide feedback on the homework assignment.
- Observe students' participation during the lesson to gauge understanding and engagement.
**Additional Notes:**
- Ensure that all multimedia tools are prepared and tested before the lesson begins.
- Be attentive to students' participation and encourage shy students to actively engage in the discussions and activities.
- Support students having difficulty understanding the concepts by providing additional examples or one-on-one assistance if necessary.
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With this lesson plan, students should leave with a well-rounded understanding of computer viruses, their impact, and how to effectively combat them.