Lesson Notes By Weeks and Term - Senior Secondary 3

Computer virus I

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Term: 2nd Term

Week: 9

Class: Senior Secondary School 3

Age: 17 years

Duration: 40 minutes of 2 periods each

Date:       

Subject:      Data Processing

Topic:-       Computer virus I

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Define computer virus
  2. State and explain each type of computer virus

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, pictures, Data Processing for senior Secondary Education by Hiit Plc, WAPB Computer Studies for Senior Secondary I by Adekunle et al, On-line Materials.

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S ACTIVITY

STEP 1

INTRODUCTION

The teacher reviews the previous lesson on the types of network topology

Students pay attention

STEP 2

EXPLANATION

He explains the meaning of computer virus

 

Students pay attention and participates

STEP 3

DEMONSTRATION

He then explains each type of computer virus

Students pay attention and participate

STEP 4

NOTE TAKING

The teacher writes a summarized note on the board

The students copy the note in their books

 

NOTE

COMPUTER VIRUS
Computer virus is a program intentionally written by some software developer to cause damage to the computer, programs and files in which it found itself. The computer virus may be designed to display unwanted messages.

The computer virus is a program that has the ability to replicates itself by changing other programs to include a copy of itself. A virus causes the infected computer system to function in ways not originally planned. The computer virus cannot be seen with your natural eyes yet the effects can be notified on an infected system.

 

TYPES OF COMPUTER VIRUS

There are basically three ways in which a virus will infect your microcomputer.

  1. Boot sector virus

A boot sector virus infects hard drives and flash disks by making itself available on the boot sector of the disk. Booting up from an infected flash disk can cause damage to the hard drive.

 

  1. Executable file virus

They spread the infection by attacking the code to executable files (EXE.COM) in this way; the virus program will be executable before the host program is executed.

 

  1. Document Virus

A document virus can affect the document by moving from disk partition table to a different sector and replace it with its own code, therefore infecting document as they are accessed.

 

EVALUATION:    1. Define Computer Virus

  1. List and explain each type of computer virus

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively