Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: Second Term
Week: 5
Age: 15 years
Duration: 45 minutes
Subject: Wood Work
Curriculum Theme: Vocational Studies
Previous Lesson: Timber Products and Manufactured Boards.
Topic: USES AND PRODUCTION OF VENEERS AND BOARDS
Subject Matter: Uses of veneers, production of veneers, uses of manufactured boards, characteristics of boards

Specific Objectives

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

Cognitive Domain:

Define veneer.
Describe the production processes of veneers.
State at least three uses of veneers.
Mention at least three types of manufactured boards.
List at least three uses of manufactured boards.
State at least two characteristics of manufactured boards.

Affective Domain:

Appreciate the importance of veneers and manufactured boards in woodworking.
Show interest in learning about different wood products.

Psychomotor Domain:

Identify different types of veneers and manufactured boards from samples or pictures.
Sketch a simple diagram illustrating a method of veneer production.

Discuss with peers the various applications of veneers and boards in daily life.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Wood Work.
State Unified Scheme of Work for Senior Secondary Wood Work.
Woodwork for Senior Secondary Schools by E.A. Adeniyi.
https://www.curriculum.gov.ng
https://www.education.gov.ng

Instructional Materials

The teacher will teach this lesson with the aid of:

Posters showing different types of veneers and manufactured boards.
Charts illustrating veneer production methods.
Samples of veneers (e.g., mahogany, teak).
Samples of different manufactured boards (e.g., plywood, particle board, MDF).
Pictures of furniture made with veneers and boards.

Rationale for the Lesson

This lesson helps pupils understand how wood can be processed into veneers and boards, which are widely used in construction and furniture making. Knowing about these materials enables pupils to make informed choices when working with wood products and appreciate their economic value.

Prerequisite/Previous Knowledge

Pupils should have basic knowledge of different types of wood and their general properties.

Lesson Content/Board Summary

USES AND PRODUCTION OF VENEERS AND BOARDS

1. Definition of Veneers

Veneers are thin slices of wood, usually thinner than 3mm, obtained by peeling, slicing, or sawing logs. They are primarily used for decorative purposes on less attractive wood or manufactured boards, and also in the production of plywood.

2. Production of Veneers

Veneers are produced using various methods. The main methods include:

Rotary Cutting: The log is rotated against a long knife, peeling off a continuous sheet of veneer like unwinding a roll of paper. This is the most common and economical method.
Slicing: The log or flitch is moved against a stationary knife, producing individual sheets of veneer. This method yields a more decorative grain pattern.
Sawing: This method involves sawing logs into thin sheets, but it is less common due to the high material waste.

3. Uses of Veneers

Veneers have several uses in woodworking and construction. The following are some uses of veneers:

To provide a decorative surface on furniture, doors, and wall panels.
To cover less expensive or unattractive wood.
As a component in the manufacture of plywood.
For marquetry and intricate designs.

4. Manufactured Boards

Manufactured boards are engineered wood products made by binding wood fibres, particles, or veneers with adhesives under heat and pressure. They are often more stable, cost-effective, and available in larger sizes than solid wood.

Common types of manufactured boards include:

Plywood: Made from several layers of wood veneer glued together, with adjacent layers having their grain rotated up to 90 degrees to each other.
Particle Board (Chipboard): Made from wood particles (chips, shavings) glued together and pressed.
Medium-Density Fibreboard (MDF): Made from wood fibres defibrated and then bonded together with resin under high temperature and pressure.
Hardboard: A very dense fibreboard, often with one smooth side, made from exploded wood fibres compressed under heat.
Blockboard: Consists of a core of softwood strips glued edge to edge, sandwiched between two or more outer plies of veneer.

5. Uses of Manufactured Boards

Manufactured boards are widely used in various applications. The following are some uses of manufactured boards:

Furniture making (cabinets, shelves, tables).
Interior decoration (wall panelling, ceiling panels).
Flooring underlayment.
Doors and door skins.
Shop fittings and displays.
Construction (formwork, temporary hoardings).

6. Characteristics of Manufactured Boards

Manufactured boards possess specific characteristics that make them suitable for certain applications. The following are some characteristics of manufactured boards:

They are generally more stable and less prone to warping or splitting than solid wood.
They can be produced in large, consistent sheet sizes.
They are often more cost-effective than solid timber.
They can be easily machined and finished.
Some types have good sound and thermal insulation properties.
They can be susceptible to moisture damage if not adequately protected.

Teaching Methods/Instructional Techniques

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

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction/Questioning
Teacher’s Activity: The teacher greets the pupils and asks them to recall the previous lesson. The teacher then asks pupils what they know about thin sheets of wood or engineered wood materials used in furniture. The teacher introduces the topic: “Uses and Production of Veneers and Boards.”
Pupils’ Activity: Pupils respond to the teacher’s questions and listen attentively to the introduction of the new topic.
Learning Point: Pupils connect previous knowledge to the new topic and are prepared for the lesson.

Step 2: Definition and Production of Veneers

Time: 10 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher defines veneer and explains the different methods of veneer production (rotary cutting, slicing, sawing) using charts and illustrations. The teacher shows samples of veneers if available.
Pupils’ Activity: Pupils listen, observe the charts and samples, and ask questions for clarification.
Learning Point: Pupils understand what veneers are and how they are produced.

Step 3: Uses of Veneers

Time: 5 minutes
Teaching Skill: Elucidation/Discussion
Teacher’s Activity: The teacher discusses the various uses of veneers, emphasizing their decorative and structural roles, and provides examples of items where veneers are used.
Pupils’ Activity: Pupils contribute to the discussion by mentioning where they have seen veneers used.
Learning Point: Pupils identify and appreciate the applications of veneers.

Step 4: Introduction to Manufactured Boards

Time: 7 minutes
Teaching Skill: Explanation/Classification
Teacher’s Activity: The teacher defines manufactured boards and introduces common types such as plywood, particle board, MDF, hardboard, and blockboard. The teacher shows samples or pictures of each type.
Pupils’ Activity: Pupils listen, observe the samples/pictures, and note the names of different manufactured boards.
Learning Point: Pupils learn about the different types of engineered wood products.

Step 5: Uses of Manufactured Boards

Time: 5 minutes
Teaching Skill: Discussion/Examples
Teacher’s Activity: The teacher leads a discussion on the various uses of manufactured boards, highlighting their versatility in construction and furniture making. The teacher provides practical examples.
Pupils’ Activity: Pupils share their knowledge of where manufactured boards are used and ask questions.
Learning Point: Pupils understand the wide range of applications for manufactured boards.

Step 6: Characteristics of Manufactured Boards

Time: 5 minutes
Teaching Skill: Explanation/Analysis
Teacher’s Activity: The teacher explains the general characteristics of manufactured boards, such as stability, cost-effectiveness, and susceptibility to moisture, comparing them to solid wood where appropriate.
Pupils’ Activity: Pupils listen and note the key characteristics of the boards.
Learning Point: Pupils comprehend the properties that distinguish manufactured boards.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

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

Define veneer.
Mention two methods of producing veneers.
State three uses of veneers.
List three types of manufactured boards.
Enumerate three uses of manufactured boards.
State two characteristics of manufactured boards.

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, reiterating the importance of veneers and manufactured boards in woodworking. The teacher gives pupils homework to identify five items in their homes made using veneers or manufactured boards.
Pupils’ Activity: Pupils listen to the summary and copy down the homework.
Learning Point: Pupils consolidate their learning and apply it to real-world examples.

Lesson Keywords

Veneer – A thin slice of wood used for decorative purposes or in plywood production.
Rotary Cutting – A method of veneer production where a log is peeled like unwinding a roll.
Slicing – A method of veneer production where a log is moved against a stationary knife to produce individual sheets.
Manufactured Boards – Engineered wood products made from wood fibres, particles, or veneers bonded with adhesives.
Plywood – A type of manufactured board made from layers of wood veneer glued with grains at right angles.
Particle Board – A manufactured board made from wood particles glued and pressed together.
MDF (Medium-Density Fibreboard) – A manufactured board made from wood fibres bonded with resin.

Differentiation

For pupils who grasp concepts quickly, the teacher can ask them to research specific types of veneers or boards not extensively covered. For pupils needing more support, the teacher will provide simplified definitions and more visual aids, allowing them to focus on identifying and listing basic uses.

Note for teachers using this lesson plan

Ensure that actual samples of veneers and different types of manufactured boards are available for pupils to see and touch. This practical experience helps in better understanding the materials. Encourage pupils to share their observations and experiences with these materials in their daily lives to make the lesson more relatable.