Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: 3rd Term
Week: 6
Age: 15 years
Duration: 45 minutes
Subject: Basic Electronics
Curriculum Theme: Basic Electronics
Previous Lesson: Magnets and Magnetism: Demonstrating Attraction and Repulsion.
Topic: ELECTRO-MAGNETISM
Subject Matter: Explanation of terms: meaning of electric field, meaning of electromagnet, meaning of electromagnetism, meaning of inductance, examples of electromagnetic effects.

Specific Objectives

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

Cognitive Domain:

Define electric field, electromagnet, electromagnetism, and inductance.
List examples of electromagnetic effects.

Affective Domain:

Appreciate the importance of electromagnetism in daily life.
Participate actively in class discussions.

Psychomotor Domain:

Draw simple diagrams illustrating an electromagnet.
Identify components that exhibit electromagnetic effects.

Collaborate with peers to discuss terms related to electromagnetism.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum
State Unified Scheme of Work
Basic Electronics for Senior Secondary Schools by A. O. Ojo

Instructional Materials

The teacher will teach this lesson with the aid of:

Charts showing electromagnetism diagrams
Whiteboard and markers
Textbooks

Rationale for the Lesson

This lesson helps pupils understand fundamental concepts in electronics that are essential for many modern technologies. Understanding electromagnetism explains how devices like electric motors, generators, and transformers work, which are common in our homes and industries.

Prerequisite/Previous Knowledge

Pupils have basic knowledge of electricity, magnets, and their interactions.

Lesson Content/Board Summary

ELECTRO-MAGNETISM

Electric Field

An electric field is a region around an electrically charged particle or object where a force would be exerted on other electrically charged particles or objects.

Electromagnet

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off.

Electromagnetism

Electromagnetism is a branch of physics that studies the interaction between electricity and magnetism. It deals with the forces that occur between electrically charged particles due to their motion.

Inductance

Inductance is the property of an electrical conductor by which a change in current flowing through it induces an electromotive force (voltage) in the conductor itself or in a nearby conductor.

Examples of Electromagnetic Effects

The following are examples of devices and phenomena that use electromagnetic effects:

Electric motors
Electric generators
Transformers
Relays
Loudspeakers
Magnetic resonance imaging (MRI) scanners
Induction cooktops

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 recall what they know about magnets and electricity. The teacher then introduces the topic “Electromagnetism” by asking how electricity can produce magnetism.
Pupils’ Activity: Pupils respond to questions and listen attentively.
Learning Point: Pupils are prepared for the lesson and connect new information to prior knowledge.

Step 2: Explanation of Electric Field

Time: 7 minutes
Teaching Skill: Explanation/Definition
Teacher’s Activity: The teacher defines an electric field, explaining it as a region where electric charges experience a force. The teacher uses diagrams to illustrate the concept.
Pupils’ Activity: Pupils listen, take notes, and ask questions for clarification.
Learning Point: Pupils understand the meaning of an electric field.

Step 3: Explanation of Electromagnet

Time: 7 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher defines an electromagnet, explaining how it is created by passing electric current through a coil of wire. The teacher shows a diagram of a simple electromagnet.
Pupils’ Activity: Pupils observe the diagrams, listen, and define electromagnet.
Learning Point: Pupils understand what an electromagnet is and how it works.

Step 4: Explanation of Electromagnetism

Time: 7 minutes
Teaching Skill: Explanation/Discussion
Teacher’s Activity: The teacher defines electromagnetism as the study of the relationship between electricity and magnetism. The teacher discusses how electric currents produce magnetic fields and vice-versa.
Pupils’ Activity: Pupils listen, participate in discussions, and write down the definition.
Learning Point: Pupils grasp the concept of electromagnetism as an interplay between electricity and magnetism.

Step 5: Explanation of Inductance

Time: 6 minutes
Teaching Skill: Explanation/Conceptualization
Teacher’s Activity: The teacher explains inductance as the property of a conductor to resist changes in electric current. The teacher gives simple examples of how it affects circuits.
Pupils’ Activity: Pupils listen and try to understand the concept of inductance.
Learning Point: Pupils understand the meaning of inductance.

Step 6: Examples of Electromagnetic Effects

Time: 5 minutes
Teaching Skill: Listing/Application
Teacher’s Activity: The teacher lists and briefly explains common devices and phenomena that use electromagnetic effects, such as electric motors, generators, and transformers.
Pupils’ Activity: Pupils listen, note the examples, and ask questions about their applications.
Learning Point: Pupils identify practical applications of electromagnetism.

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 electric field.
What is an electromagnet?
Explain the term electromagnetism.
Mention two examples of electromagnetic effects.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 3 minutes
Teaching Skill: Summarization/Assignment
Teacher’s Activity: The teacher summarizes the main points of the lesson, reiterating the definitions of the key terms. The teacher assigns homework: “Draw a simple diagram of an electromagnet and label its parts.”
Pupils’ Activity: Pupils listen to the summary and copy the homework assignment.
Learning Point: The lesson is reinforced, and pupils are given an activity to practice what they have learned.

Lesson Keywords

Electric Field – A region where an electric charge experiences a force.
Electromagnet – A temporary magnet produced by an electric current.
Electromagnetism – The study of the relationship between electricity and magnetism.
Inductance – The property of a conductor to oppose changes in current.

Differentiation

The teacher will provide additional support to struggling learners by simplifying explanations and offering more visual aids. Advanced learners will be encouraged to research more complex applications of electromagnetism.

Note for teachers using this lesson plan

Teachers should ensure that all instructional materials, especially charts, are clear and visible to all pupils. Encourage active participation through questions and practical examples relevant to the pupils’ environment.