Lesson Notes By Weeks and Term - Junior Secondary 3

Processing of materials - Wood I

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TERM – 3RD TERM

WEEK TWO

Class: Junior Secondary School 3

Age: 14 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC TECHNOLOGY

Topic: PROCESSING OF MATERIALS –WOOD I

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Define Wood Processing
  2. Identify the Stages of Wood Processing

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,

demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher explains the meaning of wood processing with the

Students pay

attention

STEP 2

EXPLANATION

Teacher discusses the various stages of wood processing.

Students pay

attention and

participate

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

PROCESSING OF MATERIALS –WOOD I

Wood processing involves converting raw wood into various products through mechanical or chemical means. This can include sawing, planing, and shaping wood for construction, manufacturing furniture, or creating paper. The process may also include treatments like drying, preserving, or applying finishes to enhance the wood's durability and appearance.

The Stages of Wood Processing

Wood processing typically involves several stages:

  1. Felling of trees: This is the initial stage where mature trees are cut down. It involves the careful selection of trees based on their species, size, and quality to ensure sustainable forestry practices.
  2. Conversion of timber: After felling, the logs are processed into usable timber. This involves removing bark, cutting logs into desired lengths, and sawing them into various sizes and shapes based on intended use, such as planks or beams.
  3. Wood seasoning: Also known as drying or curing, wood seasoning involves reducing the moisture content of timber. This is crucial to enhance stability, durability, and prevent warping or cracking. Seasoning can be done through air drying or using kilns.
  4. Wood preservation: To protect wood from decay, insects, and other environmental factors, preservation methods are applied. This can include chemical treatments, such as using preservatives like creosote or pressure-treated solutions, to extend the lifespan of the wood.

EVALUATION: 1. What is wood processing?

  1. Identify and discuss the stages of wood processing.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively