Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: 3rd Term
Week: 5
Age: 15 years
Duration: 45 minutes
Subject: Wood Work
Curriculum Theme: Vocational Studies
Previous Lesson: Portable Power Tools Identification and Description.
Topic: LIST AND CORRECT USE OF PORTABLE POWER TOOLS
Subject Matter: Listing portable tools, correct use of hand drill, correct use of jig saw, correct use of sander

Specific Objectives

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

Cognitive Domain:

List at least four portable power tools used in woodwork.
State three safety precautions to observe when using portable power tools.
Describe the correct use of a portable hand drill.

Affective Domain:

Appreciate the importance of safety when operating power tools.
Show interest in learning the correct techniques for using portable power tools.

Psychomotor Domain:

Demonstrate the correct way to hold and operate a portable hand drill.
Demonstrate the correct way to hold and operate a jig saw.
Demonstrate the correct way to hold and operate a sander.

Work cooperatively with peers during tool demonstrations.
Share tools and resources responsibly during practical sessions.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Technology Education (Junior Secondary).
State Unified Scheme of Work for Wood Work SSS 1.
Adeleke, A. M. (2018). Woodwork for Senior Secondary Schools. Ibadan: University Press PLC.
Posters illustrating different portable power tools.

Instructional Materials

The teacher will teach this lesson with the aid of:

Posters and charts showing various portable power tools.
Actual portable hand drill, jig saw, and sander.
Various drill bits, jig saw blades, and sanding papers.
Pieces of wood for demonstration.
Safety goggles and gloves.

Rationale for the Lesson

This lesson helps pupils understand and correctly use portable power tools, which are common in modern woodworking. Knowing how to operate these tools safely and efficiently is important for practical skills development and for preventing workshop accidents.

Prerequisite/Previous Knowledge

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

Lesson Content/Board Summary

LIST AND CORRECT USE OF PORTABLE POWER TOOLS

Portable Power Tools

Portable power tools are handheld machines powered by electricity or batteries, designed to perform specific tasks in woodworking more efficiently than hand tools.

The following are examples of portable power tools:

Portable Hand Drill
Jig Saw
Orbital Sander
Circular Saw
Router
Power Planer

Correct Use of Portable Hand Drill

A portable hand drill is used for making holes in wood, plastic, or metal, and for driving screws.

The steps for using a portable hand drill correctly are:

Select the correct drill bit size for the required hole.
Secure the drill bit firmly in the chuck.
Mark the drilling point accurately on the workpiece.
Secure the workpiece firmly to prevent movement.
Wear safety goggles.
Hold the drill firmly with both hands (if applicable) and position the bit on the mark.
Start drilling at a slow speed, gradually increasing speed as the bit enters the material.
Apply steady, even pressure.
Withdraw the drill bit carefully when the hole is complete.

Correct Use of Jig Saw

A jig saw is used for cutting curves, intricate shapes, and straight lines in wood, plastic, and thin metals.

The steps for using a jig saw correctly are:

Select the appropriate blade for the material and type of cut.
Install the blade securely in the blade clamp.
Mark the cutting line clearly on the workpiece.
Secure the workpiece to a stable surface, ensuring the cutting line is clear of clamps.
Wear safety goggles.
Hold the jig saw firmly with both hands (if applicable).
Place the shoe plate flat on the workpiece before starting the cut.
Start the saw and slowly guide the blade along the cutting line.
Do not force the blade; let the tool do the work.
Maintain a steady speed and direction.

Correct Use of Sander

A sander is used for smoothing wood surfaces, removing old finishes, and preparing wood for new finishes.

The steps for using a sander correctly are:

Select the appropriate grit sandpaper (coarse for rough work, fine for finishing).
Attach the sandpaper securely to the sander pad.
Ensure the workpiece is clean and free of debris.
Secure the workpiece to prevent movement.
Wear safety goggles and a dust mask.
Hold the sander firmly with both hands (if applicable).
Place the sander flat on the workpiece before turning it on.
Move the sander in overlapping passes, either with the grain or in a circular motion depending on the sander type.
Apply light, even pressure; do not press down too hard.
Regularly check the surface and change sandpaper when it becomes worn.

Safety Precautions When Using Portable Power Tools

Observing safety rules is important to prevent accidents and injuries.

The following are important safety precautions:

Always wear appropriate Personal Protective Equipment (PPE) such as safety goggles, ear protection, and gloves.
Read the tool’s instruction manual before use.
Ensure the power cord is in good condition and not frayed or damaged.
Keep the work area clean and free of clutter.
Secure the workpiece firmly before cutting or drilling.
Never force a tool; let the tool’s speed and power do the work.
Keep hands and fingers away from moving parts.
Disconnect tools from power when changing accessories (bits, blades, sandpaper) or when not in use.
Do not operate power tools when tired or under the influence of substances.

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 reviews the previous lesson briefly. The teacher then asks pupils to mention some hand tools they know and discusses how they differ from power tools. The teacher introduces the topic: “List and Correct Use of Portable Power Tools.”
Pupils’ Activity: Pupils respond to questions and listen attentively as the teacher introduces the new topic.
Learning Point: Pupils recall previous knowledge and are prepared for the new lesson.

Step 2: Presentation of Portable Power Tools

Time: 7 minutes
Teaching Skill: Explanation/Identification
Teacher’s Activity: The teacher displays posters and charts showing various portable power tools. The teacher also shows actual portable power tools like the hand drill, jig saw, and sander, naming them and explaining their general purpose. The teacher then lists other common portable power tools.
Pupils’ Activity: Pupils observe the tools, listen to the teacher’s explanations, and identify the tools shown.
Learning Point: Pupils identify and list various portable power tools.

Step 3: Demonstration of Portable Hand Drill

Time: 8 minutes
Teaching Skill: Demonstration/Practical Application
Teacher’s Activity: The teacher demonstrates the correct use of a portable hand drill, highlighting how to select and secure a drill bit, mark the workpiece, secure the workpiece, hold the drill, and operate it safely. The teacher emphasizes safety precautions.
Pupils’ Activity: Pupils observe the demonstration carefully, ask questions, and take notes.
Learning Point: Pupils understand the correct and safe operation of a portable hand drill.

Step 4: Demonstration of Jig Saw

Time: 7 minutes
Teaching Skill: Demonstration/Practical Application
Teacher’s Activity: The teacher demonstrates the correct use of a jig saw, showing how to select and install a blade, mark the cutting line, secure the workpiece, hold the jig saw, and make a cut. Safety precautions specific to the jig saw are highlighted.
Pupils’ Activity: Pupils observe the demonstration, noting the steps and safety points.
Learning Point: Pupils understand the correct and safe operation of a jig saw.

Step 5: Demonstration of Sander

Time: 6 minutes
Teaching Skill: Demonstration/Practical Application
Teacher’s Activity: The teacher demonstrates the correct use of a sander, explaining how to attach sandpaper, secure the workpiece, hold the sander, and move it across the surface for effective and safe sanding. Safety measures like wearing a dust mask are stressed.
Pupils’ Activity: Pupils watch the demonstration and ask questions for clarification.
Learning Point: Pupils understand the correct and safe operation of a sander.

Step 6: Safety Precautions

Time: 5 minutes
Teaching Skill: Discussion/Reinforcement
Teacher’s Activity: The teacher leads a discussion on general safety precautions applicable to all portable power tools. The teacher encourages pupils to mention safety rules they know and adds to the list, explaining the importance of each.
Pupils’ Activity: Pupils contribute to the discussion by stating safety rules and listen to additional points from the teacher.
Learning Point: Pupils learn and reinforce the importance of safety when using power tools.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

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

Mention three portable power tools used in woodwork.
Describe the steps involved in using a portable hand drill correctly.
State two important safety precautions to observe when using any portable power tool.
What is the primary function of a jig saw?

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/Consolidation
Teacher’s Activity: The teacher summarizes the key points of the lesson, reiterating the importance of correct usage and safety with portable power tools. The teacher gives homework: “Draw and label any two portable power tools discussed in class.”
Pupils’ Activity: Pupils listen to the summary and copy the homework.
Learning Point: Pupils consolidate their learning and prepare for independent practice.

Lesson Keywords

Portable – Easy to carry or move.
Power Tool – A tool powered by electricity, battery, or compressed air.
Hand Drill – A portable power tool used for making holes.
Jig Saw – A portable power tool used for cutting curves and irregular shapes.
Sander – A portable power tool used for smoothing surfaces.
Chuck – The part of a drill that holds the drill bit.
Workpiece – The material being worked on.
PPE – Personal Protective Equipment, items worn to minimize exposure to hazards.

Differentiation

For pupils who are struggling, the teacher will provide simplified instructions and additional hands-on guidance during demonstrations, focusing on one tool at a time. Advanced pupils will be encouraged to research other types of portable power tools and their applications, and assist in setting up demonstration materials.

Note for teachers using this lesson plan

Ensure all power tools are in good working condition and safety features are intact before demonstration. Emphasize safety throughout the lesson. Practical demonstration is key to understanding, so ensure pupils have a clear view and opportunity to ask questions. If actual tools are not available, detailed diagrams and video clips can be used as alternatives.