Class: Junior Secondary School 2 (JSS2, JSS 2)
Term: 2nd Term
Week: 7
Age: 13 years
Duration: 45 minutes
Subject: Basic Science And Technology
Curriculum Theme: Basic Technology
Previous Lesson: Metalwork Machines
Topic: Metalwork Machines (part 2)
Subject Matter: Care and maintenance of metalwork machines

Specific Objectives

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

Cognitive Domain:
(a) Explain the meaning of care and maintenance of metalwork machines.
(b) List maintenance practices used for metalwork machines.
Affective Domain:
(a) Show a positive attitude towards proper machine handling.
(b) Appreciate the importance of cleanliness in machine care.
Psychomotor Domain:
(a) Demonstrate simple cleaning procedures for metalwork machines.
(b) Arrange maintenance tools correctly.
Social Domain:
(a) Work cooperatively in groups during discussions.
(b) Share materials responsibly during demonstrations.

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
Penn Tool Co. – 11 Types of Machines Used in Metal Working Industries
Relevant Textbooks

Instructional Materials

The teacher will teach this lesson with the aid of:

Pictures or samples of metalwork machines
Maintenance tools such as oil can, brush, cleaning cloth
File card for cleaning files
Safety gadgets (goggles, gloves)
Charts on maintenance procedures

Rationale for the Lesson

To help pupils understand how proper machine care improves safety and increases machine lifespan.

Prerequisite/Previous Knowledge

Pupils have used simple tools and machines and understand basic workshop safety rules.

Lesson Content/Board Summary

Lesson Content

Metalwork Machines

Care and Maintenance of Metalwork Machines

Meaning of Care and Maintenance

Care and maintenance of metalwork machines refers to the actions taken to keep machines clean, safe, and in good working condition. It helps reduce breakdown and extends the life of the machine.

The following are the meaning and purpose of machine care:

It ensures smooth operation of machines.
It helps prevent accidents in the workshop.
It reduces wear and tear on machine parts.
It helps machines last longer.

Maintenance Practices for Metalwork Machines

Maintenance practices are the specific activities carried out to keep machines functioning properly. They must be done regularly to prevent damage.

The following are common maintenance practices:

Cleaning machines after every use.
Lubricating moving parts to reduce friction.
Tightening loose nuts, bolts, and screws.
Storing tools and machines properly after use.
Checking electrical connections for faults.
Covering machines to prevent rust and dust.

Importance of Maintaining Metalwork Machines

The importance refers to the benefits gained from regular care of metalwork machines. Good maintenance keeps the workshop safe and productive.

The following are the importance of machine maintenance:

It increases machine efficiency.
It prevents frequent breakdowns.
It improves safety during practical work.
It saves cost on repairs and replacement.
It ensures accuracy when working.

Teaching Methods/Instructional Techniques:

Discussion, Lecture, Explanation, Demonstration, Group Work, Questioning.

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 displays pictures of dirty and well-maintained metalwork machines and asks pupils which one is safer to use and why.
Pupils’ Activity: Pupils observe and respond to the teacher’s questions.
Learning Point: Pupils understand that machines must be cared for to work properly.

Step 2: Meaning of Care and Maintenance

Time: 8 minutes
Teaching Skill: Explanation
Teacher’s Activity: The teacher explains the meaning of care and maintenance and refers pupils to the board summary.
Pupils’ Activity: Pupils listen and ask questions.
Learning Point: Pupils learn the meaning of machine care.

Step 3: Maintenance Practices

Time: 10 minutes
Teaching Skill: Demonstration
Teacher’s Activity: The teacher demonstrates simple maintenance practices using tools such as brush and oil can.
Pupils’ Activity: Pupils watch the demonstration closely.
Learning Point: Pupils learn examples of maintenance practices.

Step 4: Importance of Machine Maintenance

Time: 7 minutes
Teaching Skill: Discussion
Teacher’s Activity: The teacher discusses the importance of maintaining metalwork machines and invites pupils to list advantages.
Pupils’ Activity: Pupils give responses based on the lesson.
Learning Point: Pupils understand why machine maintenance is necessary.

Step 5: Note-Taking

Time: 5 minutes
Teaching Skill: Writing
Teacher’s Activity: The teacher guides pupils to write the board summary correctly.
Pupils’ Activity: Pupils copy the notes into their exercise books.
Learning Point: Pupils have accurate and complete notes.

Step 6: Evaluation/Review

Time: 4 minutes
Teaching Skill: Questioning
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

What is machine maintenance?
Mention three maintenance practices.
State two importance of maintaining metalwork machines.
Pupils’ Activity: Pupils answer the questions.
Learning Point: Teacher assesses pupils’ understanding.

Step 7: Conclusion

Time: 1 minute
Teaching Skill: Reinforcement
Teacher’s Activity: The teacher summarizes the lesson and reinforces key points.
Pupils’ Activity: Pupils listen attentively.
Learning Point: Pupils recall the major points taught.

Lesson Keywords

Maintenance – Keeping machines in good condition.
Lubrication – Applying oil to reduce friction.
Efficiency – Ability of a machine to work effectively.
Friction – Resistance between moving parts.
Rust – Brown coating that forms when metal is exposed to moisture.

Differentiation

Provide simplified definitions for slower learners, allow advanced pupils to demonstrate maintenance tools, and give peer support through group work.

Note for teachers using this lesson plan

Ensure safety rules are followed during demonstrations. Emphasize cleanliness and proper storage of tools.