Computer Network: Meaning, Types and Requirements of a Computer Network Primary 6 (Basic 6) First Term Week 4 Information Technology – Computer Studies

COMPUTER NETWORK: MEANING, TYPES AND REQUIREMENTS OF COMPUTER NETWORK 

INFORMATION TECHNOLOGY (COMPUTER STUDIES)

PRIMARY 6 – SECOND TERM – WEEK 4

THEME – BASIC COMPUTER OPERATIONS 

PREVIOUS LESSON – Drawing with Adobe Photoshop: Identifying Toolbar Tools, Drawing and Painting Objects Primary 6 (Basic 6) Second Term Week 2 and Week 3 Information Technology – Computer Studies

TOPIC – COMPUTER NETWORK 

LEARNING AREA

1. Introduction

2. Meaning and Types of Computer Network

3. Areas where Computer Network are used

4. Computer Network Requirements

5. Importance of Computer Network

6. Practical Activities on Computer Network

7. Weekly Assessment: Test Questions and Answers/Assignment

8. Summary

LEARNING OBJECTIVES 

By the end of the lesson, pupils should be able to:

1. Define a computer network.

2. Explain the meaning of a computer network.

3. Identify the types of computer networks.

4. State the requirements of a computer network.

5. Explain the importance of a computer network.

ENTRY BEHAVIOUR

Pupils have previously learned about computers, their components, and the uses of computers in everyday life. They also understand that computers can store, process, and share information.

This lesson builds on that knowledge by introducing computer networks, which enable computers and other devices to communicate, share information, and use resources together.

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Desktop computers or laptops

2. Network cable (Ethernet cable)

3. Wireless router or Wi-Fi router

4. Network switch or hub

5. Chart showing different computer networks

6. Pictures of LAN, MAN, and WAN

7. Multimedia projector (optional)

8. Whiteboard and marker

9. Internet-enabled devices (optional)

10. Pupils’ notebooks and writing materials

METHOD OF TEACHING

Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons. 

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

CONTENT OF THE LESSON

INTRODUCTION

Many places such as schools, banks, hospitals, offices, and homes have more than one computer. These computers are often connected so they can share files, printers, internet access, and other resources. This connection is called a computer network.

In this lesson, pupils will learn the meaning of a computer network, the different types of computer networks, the requirements needed to set up a network, and the importance of networking in everyday life.

LESSON 1 – MEANING OF A COMPUTER NETWORK

A computer network is a system in which two or more computers and other devices are connected together to communicate, share information, exchange data, and share resources such as printers, files, software, and internet access.

A computer network makes communication faster and allows users to work together efficiently.

EXAMPLES OF PLACES WHERE COMPUTER NETWORKS ARE USED

Areas where Computer Networks are used:

1. Schools – To connect computers in classrooms, computer laboratories, libraries, and administrative offices for learning and sharing information.

2. Hospitals – To store and share patients’ medical records, test results, and other healthcare information.

3. Banks – To connect different branches, process financial transactions, and provide online banking services.

4. Offices – To enable employees to share files, printers, internet access, and communicate efficiently.

5. Libraries – To manage book records, provide internet access, and help users search for books electronically.

6. Airports – To manage flight schedules, ticket bookings, passenger information, and airport operations.

7. Hotels – To handle guest reservations, billing, internet services, and communication between departments.

8. Government Offices – To share official information, manage public records, and improve communication among departments.

9. Business Organisations – To support communication, file sharing, online transactions, inventory management, and teamwork.

10. Homes with Multiple Computers or Devices – To share internet connections, printers, files, and other resources among family members using computers, smartphones, tablets, and  smart TVs.

TYPES OF COMPUTER NETWORK

Computer networks are grouped according to the size of the area they cover.

1. Local Area Network (LAN)

A Local Area Network (LAN) is a network that connects computers within a small geographical area, such as:

• A classroom

• A school

• An office

• A home

Characteristics of LAN:

• It covers a small area.

• It has high speed.

• It is easy to install and maintain.

• It is used within one building or nearby buildings.

2. Metropolitan Area Network (MAN)

A Metropolitan Area Network (MAN) connects computers across a city or town.

Examples:

• Banks with branches within a city.

• Government offices within the same city.

• Universities with campuses in different parts of a city.

Characteristics of MAN:

• It covers a city or metropolitan area.

• It is larger than a LAN but smaller than a WAN.

• It connects several LANs.

3. Wide Area Network (WAN)

A Wide Area Network (WAN) connects computers across countries or continents.

The Internet is the largest example of a WAN.

Examples:

• The Internet

• International banks

• Multinational companies

Characteristics of WAN:

• It covers a very large geographical area.

• It connects many LANs and MANs.

• It uses communication technologies such as satellites and fibre-optic cables.

LESSON 2 – REQUIREMENTS OF A COMPUTER NETWORK

To set up a computer network, the following are required:

1. Computers – At least two or more computers are needed.

2. Network Interface Card (NIC) – A Network Interface Card (NIC) enables a computer to connect to a network.

3. Network Cable (Ethernet Cable) – A network cable is used to connect computers in a wired network.

4. Switch or Hub – A switch or hub connects multiple computers in the same network.

5. Router – A router connects different networks and provides access to the Internet.

6. Wireless Access Point (Wi-Fi) – A wireless access point allows devices to connect to the network without cables.

7. Network Software – Network software enables computers to communicate and share resources.

8. Internet Connection (Optional) – An Internet connection is required if users want to browse the web or access online services.

IMPORTANCE OF A COMPUTER NETWORK

Computer networks are important because:

1. They nable computers to share files and information.

2. They allow users to share printers and other devices.

3. They provide Internet access to multiple users.

4. They improve communication between users.

5. They save time and reduce costs.

6. They make teamwork and collaboration easier.

7. They support online learning and business activities.

8. They simplify data sharing and management.

LESSON 3 – PRACTICAL ACTIVITIES ON COMPUTER NETWORK

teacher demonstrates a simple computer network using available digital devices.

Activity 1: Identifying Network Devices

The teacher displays the following items and explains their uses:

• Desktop computer

• Laptop

• Smartphone

• Router

• Network cable

• Modem

• Switch (if available)

Pupils identify each device.

Activity 2: Demonstrating a Simple Network

The teacher:

• Connects two computers (or a computer and a laptop) to the same router.

• Explains that the devices are now connected in a computer network.

• Shows that both devices can access the Internet or share information.

Activity 3: Identifying Types of Computer Networks

The teacher shows pictures or diagrams of:

• Local Area Network (LAN)

• Metropolitan Area Network (MAN)

• Wide Area Network (WAN)

Pupils identify each type.

Activity 4: Identifying Network Requirements

The teacher displays the following network requirements:

• Computer

• Router

• Modem

• Network cable

• Network Interface Card (NIC)

• Internet connection

The teacher explains the function of each item.

WEEKLY ASSESSMENT: TEST QUESTIONS AND ANSWERS/ASSIGNMENT 

A. Multiple Choice Questions

1. A computer network is a system in which ________.

A. one computer works alone

B. only mobile phones are connected

C. only printers are connected

D. two or more computers are connected to share information

2. Which type of network covers a small geographical area?

A. WAN

B. MAN

C. LAN

D. PAN

3. Which type of network connects computers across a city?

A. LAN

B. MAN

C. WAN

D. PAN

4. The largest example of a Wide Area Network (WAN) is the _______.

A. radio

B. television

C. Internet

D. scanner

5. Which of the following is required to connect different networks and provide Internet access?

A. Router

B. Mouse

C. Keyboard

D. Monitor

B. Fill in the Gaps

Complete the sentences using the words in the box below: LAN, Router, Network Interface Card, Internet, Switch

6. A _______ connects different networks together.

7. The largest example of a WAN is the _______.

8. A _______ is used to connect several computers in the same network.

9. A _______ enables a computer to connect to a network.

10. _______ stands for Local Area Network.

C. True or False

11. A computer network allows computers to share information. _______

12. A LAN covers the whole world. _______

13. A WAN connects computers over a very large geographical area. _______

14. A router is used to connect different networks. _______

15. At least one computers are needed to form a computer network. _______

D. Match Column A with the correct answer in Column B.

Column A – Column B

16. LAN – A. Connects different networks

17. MAN – B. Covers a city or town

18. WAN – C. Covers a small area

19. Router – D. Covers countries and continents

20. Switch – E. Connects computers in the same network

ANSWER KEYS

1. D – Two or more computers are connected to share information.

2. C – LAN

3. B – MAN

4. C – Internet

5. A – Router

6. Router

7. Internet

8. Switch

9. Network Interface Card

10. LAN

11. True

12. False

13. True

14. True

15. False

16. C – Covers a small area

17. B – Covers a city or town

18. D – Covers countries and continents

19. A – Connects different networks

20. E – Connects computers in the same network

SUMMARY

In this lesson, pupils learned that a computer network is a system in which two or more computers and other devices are connected to communicate, share information, exchange data, and share resources such as files, printers, software, and internet access.

Pupils identified the three main types of computer networks: Local Area Network (LAN), Metropolitan Area Network (MAN), and Wide Area Network (WAN). They learned that a LAN covers a small area such as a school or office, a MAN covers a city or town, while a WAN covers large geographical areas such as countries and continents. They also discovered that the Internet is the largest example of a WAN.

Furthermore, pupils learned the requirements of a computer network, including computers, a Network Interface Card (NIC), network cables, a switch or hub, a router, a wireless access point (Wi-Fi), network software, and an internet connection where necessary.

Finally, pupils discovered the importance of computer networks and learned that they make it possible to share information and resources, improve communication, provide internet access, reduce costs, and support teamwork. They also identified common places where computer networks are used, including schools, hospitals, banks, offices, libraries, airports, hotels, government offices, business organisations, and homes.

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

Step 1: Introduction – The teacher asks pupils if they have ever used computers in a school, bank, hospital, or office. The teacher explains that computers can work together by connecting to one another through a computer network to share information and resources.

Pupils’ Activities: Pupils mention places where they have seen connected computers and listen attentively to the teacher’s explanation.

Step 2: Meaning of a Computer Network – The teacher explains that a computer network is a system in which two or more computers and other devices are connected to communicate, share information, and share resources such as files, printers, software, and internet access.

Pupils’ Activities: Pupils explain the meaning of a computer network in their own words.

Step 3: Types of Computer Networks – The teacher explains the three main types of computer networks:

• Local Area Network (LAN)

• Metropolitan Area Network (MAN)

• Wide Area Network (WAN)

The teacher explains the meaning and characteristics of each type and gives practical examples.

Pupils’ Activities: Pupils identify the three types of computer networks and state one example of each.

Step 4: Requirements of a Computer Network – The teacher displays and explains the requirements for setting up a computer network, including:

• Computers

• Network Interface Card (NIC)

• Network Cable (Ethernet Cable)

• Switch or Hub

• Router

• Wireless Access Point (Wi-Fi)

• Network Software

• Internet Connection (where necessary)

The teacher explains the function of each networking device.

Pupils’ Activities: Pupils identify the networking devices and explain their functions.

Step 5: Practical Demonstration – The teacher demonstrates how to:

• Identify a router, switch, network cable, and Network Interface Card (NIC).

• Connect two computers using a network cable (where available).

• Show how computers can communicate and share files over a network.

Pupils’ Activities: Pupils observe the demonstration, identify the networking devices, and explain their uses.

Step 6: Group Activity – The teacher divides the class into four groups and assigns the following activities:

• Group 1: Define a computer network and explain its importance.

• Group 2: Explain the three types of computer networks with examples.

• Group 3: Identify and explain the requirements of a computer network.

• Group 4: Mention places where computer networks are used and explain how they are used.

Each group presents its work before the class.

Pupils’ Activities: Pupils work together to complete the assigned activities and present their findings.

Step 7: Lesson Summary – The teacher reviews the meaning of a computer network, the types of computer networks, the requirements for setting up a network, their importance, and areas where they are used.

Pupils’ Activities: Pupils answer oral questions and summarise the lesson.

Step 8: Evaluation – The teacher asks oral, written, and practical questions to assess pupils’ understanding of the meaning, types, requirements, importance, and areas of application of computer networks.

Pupils’ Activities: Pupils answer the evaluation questions, identify networking devices, and explain the different types and uses of computer networks.

CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

NEXT LESSON

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LESSON EVALUATION 

Teacher asks pupils,

1. Define a computer network.

2. Explain the meaning of a computer network.

3. Identify and explain the three types of computer networks (LAN, MAN, and WAN).

4. State at least five requirements of a computer network.

5. Explain the importance of a computer network.

6. Mention five places where computer networks are used.

7. Demonstrate how to identify common networking devices such as a router, switch, network cable, and Network Interface Card (NIC).