Class: Junior Secondary School 1 (JSS 1 / JS1)
Term: 3rd Term
Week: 3
Age: 12 years
Duration: 45 minutes
Subject: Basic Science and Technology
Curriculum Theme: Computer Studies / Information Technology
Previous Lesson: Importance of Computer as a Tool.
Topic: THE DEVICE
Subject Matter: Meaning of device, Classes of device: Mechanical Electrical Electronic

Specific Objectives

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

Cognitive Domain:

Define what a device is.
Identify the three main classes of devices.
State examples of each class of device.

Affective Domain:

Appreciate the importance of different devices in daily life.
Show interest in learning about how various devices work.

Psychomotor Domain:

Classify given objects into their respective device classes.
Draw simple diagrams of common devices.

Discuss with peers the different types of devices they use at home.
Collaborate in group activities to identify and categorize devices.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum
State Unified Scheme of Work
Basic Science and Technology for Junior Secondary Schools, Book 1

Instructional Materials

The teacher will teach this lesson with the aid of:

Charts showing different types of devices
Pictures of mechanical, electrical, and electronic devices
Actual examples of simple devices (e.g., scissors, battery, remote control)
Whiteboard and markers

Rationale for the Lesson

This lesson helps pupils understand the basic concept of a device and categorize the various tools and machines they encounter daily. Knowing the classes of devices enables pupils to better understand how technology works around them and its impact on their lives.

Prerequisite/Previous Knowledge

Pupils should have basic knowledge of simple machines and everyday objects they use.

Lesson Content/Board Summary

THE DEVICE

Meaning of Device

A device is any object or machine made for a particular purpose or task. It helps us to do work more easily or to perform specific functions.

Classes of Devices

Devices can be grouped into three main classes based on how they operate or the type of energy they use:

Mechanical Devices
Electrical Devices
Electronic Devices

Mechanical Devices

Mechanical devices are tools or machines that use physical force and motion to perform work. They often involve moving parts like gears, levers, and pulleys.

Examples of Mechanical Devices:

Scissors
Hammer
Bicycle
Wheelbarrow
Manual typewriter

Electrical Devices

Electrical devices are machines that use electricity to operate. They convert electrical energy into other forms of energy such as light, heat, or sound.

Examples of Electrical Devices:

Electric fan
Electric heater
Light bulb
Blender
Television (older models)

Electronic Devices

Electronic devices are machines that control the flow of electrons to perform various tasks, often involving processing information. They usually contain circuits, microchips, and transistors.

Examples of Electronic Devices:

Mobile phone
Computer
Remote control
Digital camera
Calculator

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 asks them to mention some objects they use daily at home or in school.
Pupils’ Activity: Pupils mention objects like pens, books, phones, fans, etc.
Learning Point: Pupils are introduced to the idea of everyday objects as devices.

Step 2: Meaning of Device

Time: 8 minutes
Teaching Skill: Explanation
Teacher’s Activity: The teacher explains the meaning of a device and writes the definition on the board.
Pupils’ Activity: Pupils listen attentively and copy the definition into their notebooks.
Learning Point: Pupils understand the general concept of a device.

Step 3: Introduction to Classes of Device

Time: 5 minutes
Teaching Skill: Categorization
Teacher’s Activity: The teacher introduces the three main classes of devices: Mechanical, Electrical, and Electronic, explaining that devices are grouped based on how they work.
Pupils’ Activity: Pupils listen and note the three classes of devices.
Learning Point: Pupils learn that devices are categorized for better understanding.

Step 4: Mechanical Devices

Time: 7 minutes
Teaching Skill: Demonstration/Explanation
Teacher’s Activity: The teacher explains what mechanical devices are, provides examples, and shows actual or pictured examples like scissors or a hammer.
Pupils’ Activity: Pupils listen, observe the examples, and copy the definition and examples from the board.
Learning Point: Pupils understand and identify mechanical devices.

Step 5: Electrical Devices

Time: 7 minutes
Teaching Skill: Explanation/Illustration
Teacher’s Activity: The teacher defines electrical devices, gives examples, and shows pictures or actual simple electrical items like a battery or a light bulb.
Pupils’ Activity: Pupils pay attention, ask questions, and write down the points.
Learning Point: Pupils understand and identify electrical devices.

Step 6: Electronic Devices

Time: 6 minutes
Teaching Skill: Explanation/Discussion
Teacher’s Activity: The teacher explains electronic devices, gives examples, and discusses how they differ from electrical devices, using items like a remote control or a mobile phone as illustrations.
Pupils’ Activity: Pupils listen, participate in the discussion, and record the information.
Learning Point: Pupils understand and identify electronic devices and their distinction.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

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

What is a device?
Mention the three classes of devices.
Give two examples of a mechanical device.
State two examples of an electronic device.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 2 minutes
Teaching Skill: Summarization
Teacher’s Activity: The teacher summarizes the lesson by briefly reiterating the meaning of a device and its three classes. The teacher then gives pupils homework to list five devices they use at home and classify them.
Pupils’ Activity: Pupils listen to the summary and copy the homework.
Learning Point: Pupils consolidate their learning and prepare for further exploration.

Home Task: Record two correct examples of THE DEVICE from the lesson or home environment and explain each in your own words.

Lesson Keywords

Device – An object or machine made for a particular purpose.
Mechanical – Relates to machines or physical force.
Electrical – Relates to electricity.
Electronic – Relates to the control of electrons for processing information.

Differentiation

For pupils who grasp concepts quickly, the teacher can ask them to research more complex examples of each device class. For pupils who need more support, the teacher will provide additional visual aids and simpler examples.

Note for teachers using this lesson plan

Encourage pupils to bring simple, safe examples of devices from home for the next class to aid practical identification and classification. Emphasize the difference between electrical and electronic devices using clear, relatable examples.