Lesson Notes By Weeks and Term - Senior Secondary 1

Development 1

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TERM – 3RD TERM

WEEK THREE

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Technical Drawing

Topic: DEVELOPMENT 1

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

I.) Define development                            

II.) Discuss the types of development

III.) Describe the applications of development.

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 development and discuss it types

Students listens attentively to the teacher                                                                         

STEP 2

EXPLANATION

Teacher discusses the applications of development in engineering.

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

DEVELOPMENT 1

Development involves using construction techniques to transfer the design of an object onto a flat surface, typically a sheet, so that when the sheet is folded along specific lines, the intended object takes shape. This helps in creating flat patterns that can be used for manufacturing various objects.

Types of development

Basically, there are three types of development commonly employed in the development process:

  1. Triangulation: Triangulation development involves creating connections or relationships between three points or elements. This method is often used in research or analysis to verify findings by comparing data from different sources or perspectives.
  2. Parallel lines: Parallel development refers to the simultaneous progress or advancement of multiple related aspects or elements. It implies that these elements are moving forward in a coordinated manner without intersecting or deviating from their respective paths.
  3. Radial lines: Radial development involves expansion or growth from a central point outward in multiple directions, like spokes on a wheel. This type of development often occurs in organizational structures, where authority, information, or resources flow from a central hub to various departments or branches.

However, due to the intricacy associated with triangulation, the focus often shifts to mastering the parallel lines and radial lines techniques, which are more manageable and widely applicable.

Applications of development

The practical applications of development span across various aspects of daily life, including household, office, and industrial settings. However, the following are applications of development in technical drawing:

  1. Sheet Metal Fabrication: Developing flat patterns for sheet metal components like ductwork, enclosures, and panels.
  2. Packaging Design: Creating templates for packaging materials such as boxes, cartons, and containers.
  3. Sewing Patterns: Generating layouts for clothing patterns, ensuring accurate measurements and fit.
  4. Pipework Layout: Designing layouts for pipes and tubes to be cut and assembled accurately.
  5. Composite Material Cutting: Developing templates for cutting composite materials like fiberglass or carbon fiber for aerospace or automotive parts.

EVALUATION: 1. What is development?

  1. Briefly describe the applications of development in Technical drawing.
  2. Identify the types of development.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively