Class: Senior Secondary School 1 (SS1 / SSS 1)
Term: 2nd Term
Week: 4
Age: 15 years
Duration: 45 minutes
Subject: Garment Making
Curriculum Theme: Trade
Previous Lesson: Machine Faults.
Topic: SOLUTIONS TO COMMON PROBLEMS OF SEWING MACHINE
Subject Matter: Improper use of machine parts, Rectifying faults, Correct handling practices

Specific Objectives

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

Cognitive Domain:

Identify at least four common problems encountered when using a sewing machine.
State the causes of common sewing machine problems.
Explain how to rectify specific sewing machine faults.

Affective Domain:

Appreciate the importance of proper handling and maintenance of sewing machines.
Develop patience and a problem-solving attitude when faced with machine faults.

Psychomotor Domain:

Demonstrate how to rectify at least two common sewing machine faults.
Practice correct handling and maintenance procedures for a sewing machine.

Collaborate with peers to identify and suggest solutions to sewing machine problems.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Home Economics (Senior Secondary)
State Unified Scheme of Work for Garment Making (Senior Secondary)
Garment Making for Senior Secondary Schools by a relevant author (e.g., A.O. Olaitan)
https://www.sewingmachineplus.com/blog/common-sewing-machine-problems-and-solutions/
https://www.thesprucecrafts.com/common-sewing-machine-problems-and-solutions-2977755

Instructional Materials

The teacher will teach this lesson with the aid of:

A functional sewing machine
Sample fabrics
Various sewing machine needles
Different types of threads
Machine accessories (e.g., screwdrivers, lint brush, machine oil, bobbins)
Charts illustrating sewing machine parts and common faults

Rationale for the Lesson

This lesson helps pupils understand how to identify and fix common issues with sewing machines. It is important for them to maintain their machines properly, prevent damage, and ensure good sewing results in their practical work and future careers.

Prerequisite/Previous Knowledge

Pupils are expected to have basic knowledge of the main parts of a sewing machine and their functions.

Lesson Content/Board Summary

SOLUTIONS TO COMMON PROBLEMS OF SEWING MACHINE

Common Problems of Sewing Machine

Sewing machines can develop various faults that hinder their proper operation and affect the quality of sewing. Identifying these problems is the first step to solving them.

Some common problems encountered when using a sewing machine include:

Skipped stitches
Broken needles
Thread breakage (upper or lower thread)
Uneven tension
Fabric puckering or stretching
Machine jamming
Bobbin thread tangling
Noisy operation
Loose stitches

Causes of Common Sewing Machine Problems

Most sewing machine problems are caused by incorrect setup, poor maintenance, or using unsuitable materials.

The following are common causes for sewing machine faults:

Skipped stitches: Incorrect needle insertion, bent or blunt needle, wrong needle size for fabric, improper threading, low-quality thread.
Broken needles: Pulling fabric forcefully, hitting a pin, wrong needle size, bent needle, incorrect needle insertion.
Thread breakage: Improper threading, high thread tension, burrs on needle plate or bobbin case, poor quality thread, wrong needle size, dull needle.
Uneven tension: Incorrect tension settings, improperly wound bobbin, dirt in tension discs.
Fabric puckering/stretching: Incorrect tension, wrong stitch length, unsuitable presser foot, pulling fabric.
Machine jamming: Thread tangled in bobbin area, lint buildup, broken needle pieces.
Bobbin thread tangling: Incorrect bobbin winding, improper bobbin insertion, lint in bobbin case.
Noisy operation: Lack of lubrication, loose parts, lint buildup.
Loose stitches: Low tension, wrong needle size, incorrect threading.

Solutions and Rectifying Faults

Rectifying faults involves identifying the cause and taking corrective actions. Most problems can be solved with simple adjustments and cleaning.

Solutions to common sewing machine problems include:

For skipped stitches: Re-thread the machine correctly, replace the needle, use the correct needle size for the fabric, ensure needle is inserted fully with flat side to the back.
For broken needles: Do not pull fabric, remove pins, use appropriate needle size, replace bent needles.
For thread breakage: Re-thread the machine, adjust thread tension, clean burrs, use good quality thread, replace dull needles.
For uneven tension: Adjust upper and lower tension dials, re-wind bobbin, clean tension discs.
For fabric puckering/stretching: Adjust tension, select appropriate stitch length, use correct presser foot, guide fabric gently without pulling.
For machine jamming: Turn off machine, remove throat plate, clear tangled threads and lint from bobbin area, remove broken needle pieces.
For bobbin thread tangling: Ensure bobbin is wound evenly, insert bobbin correctly into the bobbin case, clean bobbin case.
For noisy operation: Lubricate machine according to manufacturer’s instructions, tighten any loose screws, clean machine thoroughly.
For loose stitches: Increase upper and/or lower thread tension, ensure correct needle and thread combination.

Correct Handling and Maintenance Practices

Preventive maintenance and correct handling extend the life of a sewing machine and reduce common problems.

Key practices for correct handling and maintenance are:

Always read the machine’s manual for specific instructions.
Keep the machine clean by regularly brushing out lint and dust, especially from the bobbin area and feed dogs.
Lubricate the machine regularly with sewing machine oil, as recommended by the manufacturer.
Use the correct needle size and type for the fabric and thread being used.
Change needles frequently (e.g., after 8-10 hours of sewing or for each new project).
Use good quality thread.
Ensure the machine is properly threaded before starting to sew.
Wind bobbins evenly and correctly.
Do not force or pull fabric through the machine; let the feed dogs do the work.
Cover the machine when not in use to protect it from dust.
Store accessories and attachments properly.

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 any challenges or problems they have faced while sewing with a machine. The teacher encourages them to share their experiences.
Pupils’ Activity: Pupils respond to the teacher’s questions and share their experiences with sewing machine problems.
Learning Point: Pupils activate prior knowledge and relate to the topic.

Step 2: Presentation of Topic

Time: 3 minutes
Teaching Skill: Explanation/Writing
Teacher’s Activity: The teacher introduces the topic, “SOLUTIONS TO COMMON PROBLEMS OF SEWING MACHINE,” and writes it on the board. The teacher briefly explains that understanding these solutions is vital for effective garment making.
Pupils’ Activity: Pupils listen attentively and copy the topic into their notebooks.
Learning Point: Pupils are aware of the lesson’s focus.

Step 3: Common Problems of Sewing Machine

Time: 8 minutes
Teaching Skill: Explanation/Listing
Teacher’s Activity: The teacher explains common problems of sewing machines, such as skipped stitches, broken needles, thread breakage, and machine jamming. The teacher uses the instructional chart to illustrate these problems.
Pupils’ Activity: Pupils observe the chart, listen, and identify common problems they have encountered.
Learning Point: Pupils can identify various problems that occur with sewing machines.

Step 4: Causes of Common Sewing Machine Problems

Time: 8 minutes
Teaching Skill: Explanation/Discussion
Teacher’s Activity: The teacher discusses the causes of the identified problems, linking each problem to a specific cause (e.g., skipped stitches due to incorrect needle insertion, thread breakage due to improper tension). The teacher encourages pupils to suggest possible causes based on their experiences.
Pupils’ Activity: Pupils participate in the discussion, contributing their ideas and asking questions for clarification.
Learning Point: Pupils understand why sewing machine problems occur.

Step 5: Solutions and Rectifying Faults

Time: 10 minutes
Teaching Skill: Demonstration/Practical Application
Teacher’s Activity: The teacher demonstrates how to rectify common faults using the sewing machine and tools. For example, the teacher shows how to re-thread the machine, change a needle, adjust tension, and clean the bobbin area. The teacher guides pupils to practice rectifying simple faults.
Pupils’ Activity: Pupils observe the demonstrations carefully and then practice rectifying simple faults under the teacher’s guidance.
Learning Point: Pupils gain practical skills in solving machine problems.

Step 6: Correct Handling and Maintenance Practices

Time: 6 minutes
Teaching Skill: Explanation/Instruction
Teacher’s Activity: The teacher explains important practices for correct handling and routine maintenance of sewing machines, such as regular cleaning, lubrication, using appropriate needles and threads, and covering the machine when not in use.
Pupils’ Activity: Pupils listen and take notes on the correct handling and maintenance practices.
Learning Point: Pupils learn how to prevent future machine problems.

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 common problems encountered when using a sewing machine.
State two causes of thread breakage.
Explain how to rectify skipped stitches.
List two correct handling practices for a sewing machine.

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 key points of the lesson, emphasizing the importance of identifying and solving sewing machine problems for efficient garment production. The teacher assigns homework: “List five tools needed for basic sewing machine maintenance and their uses.”
Pupils’ Activity: Pupils listen to the summary and copy the homework assignment.
Learning Point: Pupils consolidate their learning and prepare for future tasks.

Lesson Keywords

Skipped stitches – Stitches that are missed or not formed properly by the sewing machine.
Tension – The amount of pull or tightness on the sewing thread, affecting stitch quality.
Bobbin – A small spool that holds the lower thread in a sewing machine.
Jamming – When the sewing machine mechanism gets stuck due to tangled threads or other obstructions.
Rectify – To correct or fix a fault or problem.
Lubrication – The process of applying oil to moving parts of the machine to reduce friction.

Differentiation

For pupils who are struggling, the teacher will provide more one-on-one guidance during the practical demonstration and rectification step. Visual learners will benefit from the charts and direct demonstrations, while kinesthetic learners will engage through hands-on practice. Advanced learners can be challenged to identify more complex machine issues and suggest solutions independently.

Note for teachers using this lesson plan

Ensure that a functional sewing machine is available for demonstration and practical sessions. Emphasize safety precautions when handling machine parts and tools. Encourage pupils to actively participate in identifying faults and practicing solutions. Provide ample opportunity for hands-on experience, as this topic is highly practical.