Class: Senior Secondary School 1 (SS1 / SSS 1)
Term: 2nd Term
Week: 7
Age: 15 years
Duration: 45 minutes
Subject: Radio, Tv & Electronics
Curriculum Theme: Trade
Previous Lesson: Semi-Conductor Devices: Operation, Rectification And Applications.
Topic: ELECTRONIC COMMUNICATION SYSTEMS.
Subject Matter: Definition of electronic communication systems, Types of communication systems, Differences between systems

Specific Objectives

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

Cognitive Domain:

Define electronic communication systems.
List at least three types of electronic communication systems.
State two differences between various electronic communication systems.

Affective Domain:

Appreciate the importance of electronic communication in daily life.
Show interest in learning about communication technologies.

Psychomotor Domain:

Identify different components of a communication system on a chart.
Differentiate between various communication systems based on their characteristics.

Participate actively in discussions about communication systems.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Radio, TV and Electronics.
Lagos State Unified Scheme of Work for Senior Secondary Schools.
Basic Electronics for Senior Secondary Schools by O.A. Okoro.

Instructional Materials

The teacher will teach this lesson with the aid of:

A communication system chart illustrating various components.
A functional radio device.

Rationale for the Lesson

This lesson helps pupils understand how information is transmitted and received using electronic means, which is fundamental to modern living. Understanding these systems enables pupils to grasp the technology behind devices they use daily, like phones and radios.

Prerequisite/Previous Knowledge

Pupils are expected to have basic knowledge of what communication is and some understanding of simple electronic devices.

Lesson Content/Board Summary

ELECTRONIC COMMUNICATION SYSTEMS

Definition of Electronic Communication Systems

An electronic communication system is a method or process by which information (messages, signals, data) is transmitted from one point to another using electronic means. It involves converting information into an electrical signal, transmitting it, and then converting it back into a usable form at the receiving end.

Types of Electronic Communication Systems

The following are common types of electronic communication systems:

Radio Communication: Uses radio waves to transmit audio signals (e.g., broadcast radio, walkie-talkies).
Television Communication: Transmits both audio and video signals using electromagnetic waves (e.g., broadcast TV).
Telephone Communication: Allows two-way voice communication over long distances, either wired or wireless (mobile phones).
Satellite Communication: Uses satellites as relay stations to transmit signals over very long distances, often global (e.g., satellite TV, internet).
Computer Network Communication: Connects computers and other devices to share data and resources (e.g., internet, local area networks).

Differences Between Communication Systems

Communication systems differ in several ways, including:

Medium of Transmission: Some use radio waves (radio, TV, mobile phone), some use cables (landline phone, wired internet), and others use light (fiber optics).
Type of Information Transmitted: Some primarily transmit audio (radio), others audio and video (TV), while some transmit data (computer networks).
Direction of Communication: Some are one-way (broadcast radio/TV), while others are two-way (telephone, mobile phone).
Range/Coverage: Systems can have local (walkie-talkie), regional (broadcast TV), or global (satellite) coverage.
Complexity: Systems vary in the complexity of their components and technology.

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils and reminds them of the importance of communication in their daily lives. The teacher then asks pupils to mention different ways people communicate.
Pupils’ Activity: Pupils respond to greetings and mention various communication methods like talking, writing, using phones, and watching TV.
Learning Point: Pupils are engaged and relate communication to their experiences.

Step 2: Presentation of Definition

Time: 8 minutes
Teaching Skill: Explanation/Illustration
Teacher’s Activity: The teacher introduces the topic “Electronic Communication Systems” and uses the communication system chart to explain what an electronic communication system is, highlighting the processes of transmission and reception. The teacher writes the definition on the board.
Pupils’ Activity: Pupils listen attentively, observe the chart, and copy the definition into their notebooks.
Learning Point: Pupils understand the basic concept and definition of electronic communication systems.

Step 3: Presentation of Types

Time: 8 minutes
Teaching Skill: Listing/Demonstration
Teacher’s Activity: The teacher lists and briefly explains different types of electronic communication systems, such as radio, television, telephone, satellite, and computer networks. The teacher uses the radio device to demonstrate radio communication and points to relevant sections on the chart.
Pupils’ Activity: Pupils listen, take notes, and observe the demonstration of the radio device and the chart.
Learning Point: Pupils identify and understand various types of electronic communication systems.

Step 4: Presentation of Differences

Time: 8 minutes
Teaching Skill: Comparison/Analysis
Teacher’s Activity: The teacher discusses the key differences between various electronic communication systems, focusing on aspects like the medium of transmission, type of information, and direction of communication. The teacher uses examples from the listed types to illustrate these differences.
Pupils’ Activity: Pupils listen, ask questions for clarification, and note down the distinguishing features.
Learning Point: Pupils can differentiate between different electronic communication systems based on their characteristics.

Step 5: Class Activity/Discussion

Time: 5 minutes
Teaching Skill: Group Work/Discussion
Teacher’s Activity: The teacher divides pupils into small groups and asks them to briefly discuss which type of communication system they use most often and why. The teacher monitors and guides the discussions.
Pupils’ Activity: Pupils discuss within their groups and prepare to share their findings with the class.
Learning Point: Pupils apply their understanding and engage in collaborative learning.

Step 6: Teacher’s Consolidation

Time: 3 minutes
Teaching Skill: Summarization
Teacher’s Activity: The teacher briefly reviews the main points of the lesson, re-emphasizing the definition, types, and key differences of electronic communication systems.
Pupils’ Activity: Pupils listen and confirm their understanding.
Learning Point: Pupils reinforce their learning and clarify any remaining doubts.

Step 7: Evaluation/Review

Time: 5 minutes
Teaching Skill: Questioning/Assessment
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Define an electronic communication system.
Mention three types of electronic communication systems.
State two differences between radio communication and telephone communication.
What is the primary information transmitted in television communication?

Pupils’ Activity: Pupils answer orally and in writing.
Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 3 minutes
Teaching Skill: Wrap-up/Assignment
Teacher’s Activity: The teacher commends the pupils for their participation and gives them an assignment. “List five electronic communication devices you use at home and state the type of communication system each one represents.”
Pupils’ Activity: Pupils listen, copy the assignment, and prepare for the next lesson.
Learning Point: Pupils consolidate learning and extend knowledge through homework.

Lesson Keywords

Communication System – A process or method for transferring information from a sender to a receiver.
Electronic Communication – The transmission of information using electronic signals.
Transmitter – A device that generates and sends out signals.
Receiver – A device that detects and interprets signals.
Radio Communication – Communication via radio waves.
Television Communication – Communication transmitting both audio and video.

Differentiation

For pupils who grasp concepts quickly, the teacher can ask them to research and explain the basic components of a simple communication system (e.g., a radio). For pupils needing more support, the teacher can provide simplified diagrams and offer one-on-one guidance during the class activity.

Note for teachers using this lesson plan

Ensure the communication system chart is clear and visible to all pupils. Encourage active participation and use real-life examples to make the lesson relatable. Pay attention to pupils’ understanding of the differences between systems, as this is a key learning outcome.