Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: First Term
Week: 10
Age: 15 years
Duration: 45 minutes
Subject: Clothing and Textiles
Curriculum Theme: Clothing and Textiles
Previous Lesson: Manufacturing and Properties of Fibre: Silk.
Topic: MANUFACTURING AND PROPERTIES OF FIBRE
Subject Matter: manufacturing process of wool, properties and characteristics of wool fibre, uses of wool fabrics

Specific Objectives

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

Cognitive Domain:

Define wool fibre.
Describe the manufacturing process of wool.
State at least four properties of wool fibre.
List at least three uses of wool fabrics.

Affective Domain:

Appreciate the importance of understanding different textile fibres.
Show interest in identifying various fabric types.

Psychomotor Domain:

Identify the characteristics of wool fibre from samples (if available).
Select suitable clothing items made from wool for specific purposes.

Participate actively in class discussions about wool fibre.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Clothing and Textiles.
State Unified Scheme of Work for Senior Secondary School Clothing and Textiles.
Akinwumi, O. (2018). Clothing and Textiles for Senior Secondary Schools. Ibadan: University Press PLC.
Online resources on textile manufacturing.

Instructional Materials

The teacher will teach this lesson with the aid of:

Video clips showing the wool manufacturing process.
Charts illustrating the properties of wool.
Samples of wool fibre and wool fabric (e.g., woollen cloth, yarn).

Rationale for the Lesson

Understanding the manufacturing process and properties of wool fibre helps pupils to appreciate the origin and characteristics of a natural fibre. This knowledge enables them to make informed decisions when selecting, caring for, and using wool fabrics in their daily lives.

Prerequisite/Previous Knowledge

Pupils have basic knowledge of textile fibres, including natural fibres and their general classifications.

Lesson Content/Board Summary

MANUFACTURING AND PROPERTIES OF WOOL FIBRE

1. Definition of Wool Fibre

Wool is a natural protein fibre obtained from the fleece of sheep. It is known for its warmth, elasticity, and durability, making it suitable for various textile products.

2. Manufacturing Process of Wool

The manufacturing process of wool involves several key steps:

Shearing: The process of removing the fleece from the sheep, typically done once a year.
Sorting and Grading: The shorn fleece is sorted based on quality, length, and fineness of the fibres.
Scouring: The raw wool is washed to remove impurities such as grease (lanolin), dirt, and suint (sweat).
Carding: The clean, dry wool fibres are disentangled and aligned into a web or sliver.
Combing (optional): For finer yarns, carded wool is combed to remove short fibres and further align the long fibres.
Spinning: The sliver is drawn out and twisted to form yarn.
Weaving/Knitting: The wool yarn is then woven or knitted into fabric.
Finishing: Various treatments are applied to improve the fabric’s appearance, feel, and performance, such as fulling, napping, and dyeing.

3. Properties and Characteristics of Wool Fibre

Wool fibre possesses distinct properties that make it valuable in textile production. These include:

Warmth: Wool has excellent insulating properties due to its crimped structure, which traps air.
Elasticity and Resilience: It can stretch and return to its original shape, making it resistant to wrinkling.
Absorbency: Wool can absorb a significant amount of moisture vapour without feeling damp.
Felting Property: The scales on the surface of wool fibres can interlock when subjected to heat, moisture, and friction, leading to shrinkage and compaction.
Strength: It has good strength when dry, but loses some strength when wet.
Durability: Wool fabrics are generally long-lasting.
Flame Resistance: Wool is naturally flame resistant and self-extinguishing.
Lustre: Varies from dull to fairly lustrous depending on the sheep breed and processing.

4. Uses of Wool Fabrics

Wool fabrics are used in a wide range of products due to their unique properties. Common uses include:

Making warm clothing such as sweaters, coats, scarves, and socks.
Producing blankets and throws.
Manufacturing upholstery fabrics for furniture.
Creating carpets and rugs.
Making felt products.

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids

Instructional Procedures

Step 1: Introduction

Time: 4 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils, checks attendance, and reviews the previous lesson briefly. The teacher then introduces the new topic by asking pupils to name some natural fibres and their sources, leading them to mention wool and sheep.
Pupils’ Activity: Pupils respond to questions and listen attentively.
Learning Point: Pupils are prepared for the new lesson and connect it to prior knowledge.

Step 2: Definition of Wool Fibre

Time: 4 minutes
Teaching Skill: Explanation/Definition
Teacher’s Activity: The teacher defines wool fibre, explaining its origin from sheep fleece and its general characteristics. The teacher may show a sample of raw wool or a picture of a sheep being shorn.
Pupils’ Activity: Pupils listen, take notes, and ask questions for clarification.
Learning Point: Pupils understand what wool fibre is and its source.

Step 3: Manufacturing Process of Wool

Time: 10 minutes
Teaching Skill: Demonstration/Explanation
Teacher’s Activity: The teacher explains the step-by-step manufacturing process of wool, from shearing to finishing, using charts or a video clip to illustrate each stage. Key terms like shearing, scouring, carding, and spinning are highlighted.
Pupils’ Activity: Pupils observe the video/charts, listen to the explanation, and take notes on the process.
Learning Point: Pupils learn the stages involved in converting raw wool into fabric.

Step 4: Properties and Characteristics of Wool Fibre

Time: 10 minutes
Teaching Skill: Discussion/Analysis
Teacher’s Activity: The teacher discusses the unique properties of wool fibre, such as warmth, elasticity, absorbency, and felting property. The teacher may demonstrate elasticity with a wool yarn sample and explain how crimps contribute to warmth.
Pupils’ Activity: Pupils identify and discuss the various properties of wool, noting down key characteristics.
Learning Point: Pupils understand the distinct features that make wool a valuable textile fibre.

Step 5: Uses of Wool Fabrics

Time: 4 minutes
Teaching Skill: Listing/Application
Teacher’s Activity: The teacher leads a discussion on the various uses of wool fabrics, prompting pupils to suggest items they know are made from wool. The teacher then lists common uses on the board.
Pupils’ Activity: Pupils contribute ideas and list the uses of wool fabrics in their notebooks.
Learning Point: Pupils can identify practical applications of wool fabrics.

Step 6: Class Activity/Discussion

Time: 4 minutes
Teaching Skill: Engagement/Collaboration
Teacher’s Activity: The teacher shows samples of different wool fabrics (e.g., a piece of suit fabric, a knitted sweater swatch) and asks pupils to identify their characteristics based on the properties discussed. The teacher facilitates a brief discussion on appropriate care for wool items.
Pupils’ Activity: Pupils examine the samples, discuss their observations, and share ideas on wool care.
Learning Point: Pupils apply their knowledge to real-world examples and understand basic care considerations.

Step 7: Evaluation/Review

Time: 4 minutes

Teaching Skill: Questioning/Assessment

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

Define wool fibre.
List any three steps in the manufacturing process of wool.
State four properties of wool fibre.
Mention three common uses of wool fabrics.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 5 minutes
Teaching Skill: Summarization
Teacher’s Activity: The teacher summarizes the key points of the lesson, reiterating the definition, manufacturing process, properties, and uses of wool. The teacher assigns homework, asking pupils to research different types of sheep breeds known for their wool.
Pupils’ Activity: Pupils listen to the summary and copy down the homework.
Learning Point: Pupils consolidate their learning and are given an opportunity for further research.

Lesson Keywords

Wool – A natural protein fibre obtained from the fleece of sheep.
Shearing – The process of removing wool fleece from a sheep.
Scouring – The washing of raw wool to remove impurities.
Carding – The process of disentangling and aligning wool fibres.
Spinning – The process of twisting fibres into yarn.
Felting – The interlocking of wool fibres under heat, moisture, and friction.

Differentiation

For pupils who grasp concepts quickly, they can be encouraged to research the chemical composition of wool or compare wool properties with another natural fibre. For those who require more support, the teacher can provide simplified notes or visual aids and offer one-on-one explanations during class activities.

Note for teachers using this lesson plan

Teachers should ensure the availability of visual aids, especially video clips or charts, to make the manufacturing process clear and engaging. Hands-on experience with wool samples will greatly enhance pupils’ understanding of its properties. Encourage active participation and real-world connections.