Lesson Notes By Weeks and Term - Senior Secondary 1

Introduction to Technical Drawing, types of drawing and applications

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TERM – 1ST TERM

WEEK ONE

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Technical Drawing

Topic: INTRODUCTION TO TECHNICAL DRAWING, TYPES OF DRAWING AND APPLICATIONS

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

  1. Define Technical drawing
  2. Identify the types of technical drawings
  3. IDiscuss the applications of technical drawings

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 technical drawings and identify the types

Students listens attentively to the teacher                                                                         

STEP 2

EXPLANATION

Teacher discusses the applications of technical drawings.

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

INTRODUCTION TO TECHNICAL DRAWING, TYPES OF DRAWING AND APPLICATIONS

Technical drawing is a precise form of illustration used to visually communicate complex ideas in engineering, architecture, and design. It employs standardized symbols, line types, and notation to convey precise details about dimensions, materials, and construction methods.

Types of technical drawings

1. Orthographic Projection: Also known as multiview projection, this method represents an object in two or more views, typically including front, top, side, and sometimes bottom views.

2. Isometric Drawing: This type of drawing represents a three-dimensional object using a series of 30-degree angles, resulting in a visually appealing representation that shows all three dimensions equally.

3. Perspective Drawing: Unlike orthographic projection, perspective drawing portrays objects as they appear to the human eye, with foreshortening and vanishing points. It provides a realistic depiction of objects in space, commonly used in architectural renderings and product design.

Applications of technical drawing

  1. Engineering: Technical drawings are essential in engineering disciplines such as mechanical, electrical, civil, and aerospace engineering for designing and documenting components, assemblies, and systems.
  2. Architecture: Architects use technical drawings to visualize and communicate design concepts, floor plans, elevations, and construction details to clients, contractors, and regulatory authorities.
  3. Manufacturing: Technical drawings serve as blueprints for manufacturing processes, guiding machinists, fabricators, and assembly line workers in producing accurate and precise parts and products.
  4. Construction: Construction professionals rely on technical drawings to plan, coordinate, and execute building projects, including structural drawings, plumbing layouts, and electrical schematics.

EVALUATION: 1. What is Technical drawing?

  1. Briefly describe the applications of technical drawings.
  2. Sketch these in isometric projection

 

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively