Class: Junior Secondary School 3 (JSS3, JSS 3)
Term: 2nd Term
Week: 7
Age: 14 years
Duration: 45 minutes
Subject: Basic Science And Technology
Curriculum Theme: Basic Technology
Previous Lesson: Methods of Joining Metals and Tools Used in Metal Work
Topic: Machine Motion – Motion in Engineering System
Subject Matter: Definition of machine motion, Types of motion (Linear and Rotary), Conversion of motion, Applications of machine motion

Specific Objectives

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

Cognitive Domain:
(a) Define machine motion in an engineering system.
(b) Identify and distinguish between linear and rotary motion.
Affective Domain:
(a) Show interest in how machines move and function in daily life.
Psychomotor Domain:
(a) Demonstrate examples of linear and rotary motion using simple models or body movement.
Social Domain:
(a) Participate actively in group discussions on machine motion applications.

Reference Materials

The following resources was used in planning this lesson:

9 Years Basic Education Curriculum
Lagos State Unified Scheme of Work for Junior Secondary Schools.
Britannica – Types of Motion in Machines (https://www.britannica.com/science/motion-mechanics)
Relevant Textbooks

Instructional Materials

The teacher will teach this lesson with the aid of:

Charts showing types of motion
Simple machine models (wheel, pulley, slider)
Pictures of engineering systems
Chalkboard and chalk

Rationale for the Lesson

Understanding machine motion helps learners appreciate how engineering systems function and apply this knowledge to everyday machines and technological devices.

Prerequisite/Previous Knowledge

Pupils have observed movement in simple machines and everyday objects such as bicycles, fans, and door hinges.

Lesson Content/Board Summary

Machine Motion – Motion in Engineering System

Meaning of Machine Motion

Machine motion refers to the movement of parts of a machine when it is operating. In engineering systems, motion allows machines to perform useful work by transferring force and energy from one part to another.

Types of Motion in Engineering Systems

The following are the common types of motion in machines:

Linear motion – movement in a straight line, such as a sliding drawer or piston movement.
Rotary motion – movement around a fixed axis, such as the rotation of wheels, gears, and fans.

Conversion of Motion

In machines, one type of motion can be changed into another to achieve a specific function. This process is known as conversion of motion.

Examples are:

Rotary motion converted to linear motion in a sewing machine.
Linear motion converted to rotary motion in a hand-operated grinding machine.

Applications of Machine Motion

Machine motion is used in many engineering systems to perform work.

Examples include:

Fans and generators using rotary motion.
Elevators using linear motion.
Bicycle systems combining both linear and rotary motion.

Teaching Methods/Instructional Techniques:

Discussion, Explanation, Demonstration, Questioning, Visual Aids

Instructional Procedures

To deliver this lesson, the teacher will adopt the following steps:

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher asks pupils to mention machines they see daily and how they move.
Pupils’ Activity: Pupils respond by giving examples of machines and describing their movement.
Learning Point: Machines move in different ways to perform work.

Step 2: Meaning of Machine Motion

Time: 8 minutes
Teaching Skill: Explanation
Teacher’s Activity: The teacher defines machine motion and explains its role in engineering systems.
Pupils’ Activity: Pupils listen attentively and ask questions.
Learning Point: Machine motion is the movement of machine parts during operation.

Step 3: Types of Motion in Engineering Systems

Time: 10 minutes
Teaching Skill: Demonstration
Teacher’s Activity: The teacher explains and demonstrates linear and rotary motion using charts and models.
Pupils’ Activity: Pupils observe and identify examples shown.
Learning Point: Linear and rotary motions are common in machines.

Step 4: Conversion and Applications of Motion

Time: 7 minutes
Teaching Skill: Discussion
Teacher’s Activity: The teacher explains conversion of motion and discusses applications in machines.
Pupils’ Activity: Pupils participate by mentioning machines that convert motion.
Learning Point: Motion can be converted to suit machine functions.

Step 5: Note-Taking

Time: 5 minutes
Teaching Skill: Chalkboard Summary
Teacher’s Activity: The teacher guides pupils to copy the board summary.
Pupils’ Activity: Pupils copy notes neatly.
Learning Point: Key concepts of machine motion are recorded.

Step 6: Evaluation/Review

Time: 7 minutes
Teaching Skill: Questioning
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Define machine motion.
State two types of motion in machines.
Give one example of motion conversion.
Pupils’ Activity: Pupils answer the questions orally.
Learning Point: Understanding of machine motion is assessed.

Step 7: Conclusion

Time: 3 minutes
Teaching Skill: Reinforcement
Teacher’s Activity: The teacher summarizes the lesson and highlights key points.
Pupils’ Activity: Pupils listen and respond to final remarks.
Learning Point: Machine motion enables engineering systems to function effectively.

Lesson Keywords

Machine motion – movement of machine parts
Linear motion – straight-line movement
Rotary motion – circular movement
Conversion – change from one motion to another
Engineering system – combination of machines working together

Differentiation

Use visual aids for slow learners and practical demonstrations for active learners.

Note for teachers using this lesson plan

Relate examples to familiar machines in the pupils’ environment for better understanding.