Class: Senior Secondary School 1 (SS1 / SSS 1)
Term: First Term
Week: 7
Age: 15 years
Duration: 45 minutes
Subject: Electrical Installation and Maintenance Work
Curriculum Theme: Technology
Previous Lesson: Marking: Marking Tools Types and Uses.
Topic: STRIKING TOOLS: Types and Uses of Striking Tools
Subject Matter: Types of striking tools, uses of striking tools in workshop, correct striking techniques, safety precautions when using striking tools.

Specific Objectives

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

Cognitive Domain:

Define striking tools.
List different types of striking tools.
State the uses of various striking tools in a workshop.
Explain correct striking techniques.
Identify safety precautions when using striking tools.

Affective Domain:

Appreciate the importance of using striking tools correctly.
Value safety measures when working with tools.
Show willingness to follow safety guidelines.

Psychomotor Domain:

Demonstrate the correct way to hold and use common striking tools.
Apply appropriate striking techniques for different tasks.
Practise safety precautions during tool usage.

Work responsibly when using tools individually.
Understand the impact of unsafe tool use on others in a shared workshop.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Electrical Installation and Maintenance Work (Senior Secondary Education).
State Unified Scheme of Work for Senior Secondary Schools.
Electrical Installation Technology for Senior Secondary Schools, Book 1.
https://www.education.gov.ng
https://www.nerdc.gov.ng

Instructional Materials

The teacher will teach this lesson with the aid of:

A set of striking tools (e.g., ball-peen hammer, claw hammer, rubber mallet, wooden mallet).
Safety goggles.
Workpiece (e.g., a piece of wood or metal for demonstration).

Rationale for the Lesson

This lesson helps pupils understand how to correctly and safely use striking tools, which are fundamental in electrical installation and maintenance work. Knowing the proper techniques and safety precautions prevents accidents and ensures efficient completion of tasks, preparing them for practical applications in the field.

Prerequisite/Previous Knowledge

Pupils are expected to have basic knowledge of hand tools and general workshop safety rules.

Lesson Content/Board Summary

STRIKING TOOLS

Definition of Striking Tools

Striking tools are hand tools used to deliver impact or force to an object or another tool, such as chisels or punches. They are essential for various tasks like driving nails, shaping materials, or assembling components.

Types of Striking Tools

The following are common types of striking tools:

Claw Hammer: Used for driving nails and prying them out. It has a flat striking face and a V-shaped claw.
Ball-peen Hammer: Used for shaping metal, riveting, and striking punches or chisels. It has a flat face and a rounded (peen) end.
Sledgehammer: A heavy hammer used for demolition work or driving large stakes.
Mallet: A hammer with a relatively large head, made of rubber, wood, or plastic. It is used for striking objects that must not be damaged by a metal hammer, such as chisels with wooden handles or when assembling delicate parts.
Dead-blow Hammer: A specialized hammer with a hollow head filled with sand or shot, which reduces rebound and delivers a sustained blow without damaging the surface.

Uses of Striking Tools in Workshop

Striking tools are used for the following purposes:

Driving nails, pins, or fasteners into materials.
Shaping and forming metal sheets or rods.
Assembling or disassembling components by applying force.
Breaking or demolishing materials (e.g., concrete, wood).
Striking chisels, punches, or other tools to cut, mark, or modify workpieces.

Correct Striking Techniques

To use striking tools effectively and safely, observe the following techniques:

Grip: Hold the tool firmly near the end of the handle for maximum leverage and control.
Stance: Stand in a balanced position with feet shoulder-width apart.
Targeting: Focus on the object being struck, not the hammer head.
Swing: Use a controlled swing, engaging the arm and shoulder for power, rather than just the wrist.
Follow-through: Allow the hammer to follow through after impact to maximize force and reduce strain.
Eye Protection: Always wear safety goggles to protect against flying debris.

Safety Precautions When Using Striking Tools

The following safety precautions should be observed when using striking tools:

Always wear appropriate personal protective equipment (PPE), especially safety goggles.
Ensure the hammerhead is securely attached to the handle.
Inspect the tool for cracks, chips, or damage before use; do not use damaged tools.
Strike squarely on the object; avoid glancing blows.
Do not use a hammer with a loose or damaged handle.
Do not use a hardened steel hammer to strike another hardened steel tool (e.g., using a ball-peen hammer on a hardened chisel) as this can cause chipping.
Keep the work area clear of obstructions and bystanders.
Ensure the workpiece is stable and secured before striking.

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, reviews the previous lesson briefly, and then introduces the topic “Striking Tools” by asking pupils to name any tools they know that are used to hit objects.
Pupils’ Activity: Pupils respond by naming tools like hammer, mallet, etc.
Learning Point: Pupils recall prior knowledge and are introduced to the lesson topic.

Step 2: Explanation of Striking Tools and Types

Time: 10 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher defines striking tools and lists different types, showing actual examples of a claw hammer, ball-peen hammer, and mallet. The teacher explains the unique features of each tool.
Pupils’ Activity: Pupils observe the tools, listen attentively, and ask questions for clarification.
Learning Point: Pupils learn the definition and various types of striking tools.

Step 3: Uses of Striking Tools

Time: 7 minutes
Teaching Skill: Discussion/Questioning
Teacher’s Activity: The teacher discusses the specific uses of each striking tool demonstrated, relating them to practical tasks in electrical installation and maintenance work.
Pupils’ Activity: Pupils contribute by suggesting uses they might know or have observed.
Learning Point: Pupils understand the practical applications of different striking tools.

Step 4: Correct Striking Techniques

Time: 8 minutes
Teaching Skill: Demonstration
Teacher’s Activity: The teacher demonstrates the correct way to hold a hammer, stand, aim, and strike an object (e.g., driving a nail into a piece of wood). The teacher emphasizes a controlled swing and proper grip.
Pupils’ Activity: Pupils observe the demonstration carefully, paying attention to the techniques.
Learning Point: Pupils learn and understand the correct techniques for using striking tools.

Step 5: Safety Precautions

Time: 5 minutes
Teaching Skill: Explanation/Discussion
Teacher’s Activity: The teacher leads a discussion on important safety precautions to observe when using striking tools, emphasizing the use of safety goggles and checking tool condition.
Pupils’ Activity: Pupils participate in the discussion, sharing potential hazards and safety tips.
Learning Point: Pupils learn about essential safety measures to prevent accidents.

Step 6: 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 striking tool?
Mention three types of striking tools.
State two uses of a claw hammer.
List three safety precautions to take when using striking tools.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 7: Conclusion

Time: 5 minutes
Teaching Skill: Summarization/Assignment
Teacher’s Activity: The teacher summarizes the key points of the lesson, reiterating the importance of correct usage and safety. The teacher assigns homework: “Draw and label two types of striking tools and state their uses.”
Pupils’ Activity: Pupils listen to the summary and copy the homework assignment.
Learning Point: Pupils consolidate their learning and are given an opportunity to practice.

Lesson Keywords

Striking tools – Hand tools used to apply impact or force.
Hammer – A tool with a heavy head and a handle, used for striking.
Mallet – A hammer with a non-metallic head (e.g., rubber, wood) for softer blows.
Claw hammer – A hammer with a flat striking face and a V-shaped claw for prying.
Ball-peen hammer – A hammer with a flat face and a rounded end, used for metalwork.
Safety goggles – Protective eyewear used to shield eyes from debris.

Differentiation

For pupils who grasp concepts quickly, the teacher can challenge them to identify specialized striking tools not covered in the lesson. For pupils needing more support, the teacher can provide one-on-one guidance during the practical demonstration and assign simpler identification tasks.

Note for teachers using this lesson plan

Ensure all demonstration tools are in good working condition. Emphasize practical application and allow pupils to safely handle the tools under strict supervision. Prioritize safety throughout the lesson.