Types of Computer Networks for SS 3

Class: SS 3
Term: First Term
Week: 9
Age: 16-17 years
Duration: 45 minutes
Subject: Data Processing
Topic: Networking
Subject Matter: Types of networking
Previous Lesson: Meaning and Uses of Computer Networking

Specific Objectives

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

Cognitive Domain

• Identify at least five different types of computer networks.
• Explain the characteristics of LAN, WAN, and MAN.
• State examples of each network type discussed.

Affective Domain

• Appreciate the importance of different network types in various settings.
• Participate actively in discussions about network applications.

Psychomotor Domain

• Differentiate between various network types based on their geographical scope.
• Illustrate simple diagrams representing different network configurations.

Reference Materials

The following resources were used in planning this lesson:

• 2025 Revised 9 Years Basic Education Curriculum
• Relevant State Unified Scheme of Work
• Data Processing for Senior Secondary Schools 3
• The HeadTeacher Scheme of work

Instructional Materials

The teacher will teach this lesson with the aid of:

• Pictures of computers in a network (e.g., LAN setup, internet connection)
• Whiteboard and markers
• Projector (optional, for displaying network diagrams)
• Textbooks and notebooks

Rationale for the Lesson

Understanding different types of computer networks is fundamental in Data Processing, as it forms the backbone of modern communication and data sharing. This lesson helps students grasp how information is transmitted across various scales, from a small office to global connections. It provides essential knowledge for future studies in networking and IT careers.

Prerequisite/Previous Knowledge

Students should have a basic understanding of what a computer network is and its general purpose from previous lessons.

Lesson Content/Board Summary

Types of Computer Networks

Computer networks can be classified based on their geographical area, the number of computers connected, and their purpose. Understanding these classifications helps in designing and managing network infrastructure effectively.

Common Types of Computer Networks

The main types of computer networks include:

1. Local Area Network (LAN): A network that connects computers and devices within a limited geographical area, such as a home, school, office building, or a small group of buildings. LANs are typically characterized by high data transfer rates and are owned and managed by a single organization or individual.
2. Wireless Local Area Network (WLAN): A type of LAN that uses wireless communication to connect devices within a limited area. Instead of cables, WLANs use radio waves (Wi-Fi) to transmit data, offering flexibility and mobility to users.
3. Wide Area Network (WAN): A network that spans a large geographical area, connecting multiple LANs over long distances. WANs can cover cities, states, or even countries, often using telecommunication lines, fiber optic cables, or satellite links. The internet is the largest example of a WAN.
4. Metropolitan Area Network (MAN): A network that connects computer users in a geographical area larger than a LAN but smaller than a WAN, typically spanning a city or a large campus. MANs are often used by municipalities or large corporations to connect their various branches within a city.
5. Storage Area Network (SAN): A dedicated high-speed network that provides access to consolidated, block-level data storage. SANs are primarily used in enterprise environments to enhance storage capacity and performance, making storage devices accessible to servers as if they were locally attached.
6. Campus Area Network (CAN): A network that connects multiple LANs within a limited geographical area, such as a university campus, corporate campus, or industrial park. It is larger than a LAN but smaller than a MAN, typically connecting buildings that are physically close to each other.
7. Personal Area Network (PAN): A network organized around an individual person, typically within a range of a few meters. PANs are used for connecting personal devices like smartphones, laptops, and printers, often using technologies like Bluetooth or USB.
8. Desk Area Network (DAN): A network designed to connect devices on or around a single desk, similar to a very small PAN. It primarily focuses on connecting peripherals like keyboards, mice, monitors, and printers to a computer system at a workstation.

Teaching Methods/Instructional Techniques

Discussion, Explanation, Question and Answer, Visual Aids, Guided Practice

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Activating Prior Knowledge

Teacher’s Activity: The teacher greets the students and reviews the previous lesson on the basic concept of computer networks. The teacher then introduces the topic of “Types of Computer Networks” by asking students if they know different ways computers can be connected.

Pupils’ Activity: Students respond to questions about computer networks and share their initial thoughts on how computers can be connected.

Learning Point: Basic network concept recall

Step 2: Local Area Network (LAN) and Wireless LAN (WLAN)

Time: 8 minutes

Teaching Skill: Explanation/Demonstration

Teacher’s Activity: The teacher explains what a LAN is, its characteristics (limited area, high speed), and provides examples (school lab, home network). The teacher then introduces WLAN as a wireless version of LAN, explaining its advantages like mobility, using pictures of network setups.

Pupils’ Activity: Students listen, observe the pictures, and ask questions for clarification. They note down key definitions and examples.

Learning Point: LAN and WLAN understanding

Step 3: Wide Area Network (WAN)

Time: 6 minutes

Teaching Skill: Explanation/Examples

Teacher’s Activity: The teacher explains WAN as a network covering a large geographical area, connecting multiple LANs. Examples like the internet and bank ATM networks are given. The teacher highlights its characteristics (large scale, slower speeds compared to LANs, diverse technologies).

Pupils’ Activity: Students listen, take notes, and contribute with examples of WANs they might know.

Learning Point: WAN concept and examples

Step 4: Metropolitan Area Network (MAN) and Campus Area Network (CAN)

Time: 6 minutes

Teaching Skill: Comparison/Differentiation

Teacher’s Activity: The teacher explains MAN as a network covering a city and CAN as a network covering a campus, differentiating them from LANs and WANs based on their intermediate geographical scope. Examples like city-wide government networks or university networks are provided.

Pupils’ Activity: Students listen, compare the network types, and note down the distinguishing features and examples.

Learning Point: MAN and CAN characteristics

Step 5: Storage Area Network (SAN)

Time: 5 minutes

Teaching Skill: Specialized Concept Explanation

Teacher’s Activity: The teacher introduces SAN as a specialized high-speed network for data storage, explaining its purpose in large organizations for efficient data management and access. The teacher explains that it connects servers to storage devices.

Pupils’ Activity: Students listen and try to understand the specialized application of SANs, asking questions about its use.

Learning Point: SAN purpose and function

Step 6: Personal Area Network (PAN) and Desk Area Network (DAN)

Time: 5 minutes

Teaching Skill: Practical Application

Teacher’s Activity: The teacher explains PAN as a network for personal devices over a short range (e.g., Bluetooth, USB connection between phone and PC). The teacher then briefly describes DAN as an even smaller network for devices on a single desk, connecting peripherals.

Pupils’ Activity: Students relate these concepts to their personal use of devices and note down the definitions and examples.

Learning Point: PAN and DAN applications

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

1. What is the main difference between a LAN and a WAN?
2. Give two examples of a Personal Area Network (PAN).
3. Which type of network would typically connect all the buildings on a university campus?
4. Briefly explain what a Storage Area Network (SAN) is used for.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Network type differentiation

Step 8: Note-Taking

Time: 4 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils/students to copy the essential Board Summary notes on the types of computer networks into their notebooks.

Pupils’ Activity: Pupils/students copy the notes carefully into their notebooks.

Learning Point: Recording lesson content

Step 9: Conclusion

Time: 1 minute

Teaching Skill: Summarization

Teacher’s Activity: The teacher briefly summarizes the lesson by reiterating the importance of understanding the different types of networks and their applications in the real world.

Pupils’ Activity: Students listen attentively and prepare for the next lesson.

Learning Point: Network types consolidated

Continuous Assessment/Further Study

Type: Homework

Instruction: Research and write a short paragraph on a real-world example for each of the following network types, different from the ones discussed in class:

1. LAN
2. WAN
3. MAN
4. SAN
5. PAN

Lesson Keywords

• LAN – Local Area Network
• WLAN – Wireless Local Area Network
• WAN – Wide Area Network
• MAN – Metropolitan Area Network
• SAN – Storage Area Network
• CAN – Campus Area Network
• PAN – Personal Area Network
• DAN – Desk Area Network

Differentiation

For weaker learners, the teacher will provide simplified definitions and focus on distinguishing between LAN, WAN, and MAN using more common examples. Faster learners can be challenged to research emerging network types or specific network topologies related to the discussed types.

Suggested Lesson Videos

For further understanding, students can search for “Types of Computer Networks explained” on YouTube.

Teacher Guide for Using This Lesson Plan

Before the lesson, ensure you have clear diagrams or pictures illustrating each network type, especially for LAN, WAN, and MAN, to aid visual learners. Start by reviewing the basic concept of networking to ensure all students are on the same page. When explaining each network type, use relatable examples from their environment or current affairs. Encourage students to ask questions and share their own examples. During the note-taking stage, ensure students are accurately copying the Board Summary. For evaluation, use a mix of oral and written questions to check understanding. Provide constructive feedback on their responses and homework assignments.