Exploring Careers in Technical Drawing: An Introduction Technical Drawing SS 1 First Term Lesson Notes Week 1

Technical Drawing, SS 1, First Term, Week 1 on Introduction to Technical Drawing:

Lesson Plan: Introduction to Technical Drawing

Subject: Technical Drawing
Class: SS 1
Term: First Term
Week: 1
Age: 14-16 years
Topic: Introduction to Technical Drawing
Sub-Topic: Career Opportunities and Use of Drawing Materials
Duration: 40 minutes

Behavioral Objectives

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

1. Identify career opportunities that require technical drawing skills.
2. List and explain the uses of various technical drawing materials.

Keywords

• Technical drawing
• Career opportunities
• Drawing materials

Set Induction

The teacher will display technical drawing tools and discuss the role of technical drawing in daily life and various professions.

Entry Behavior

Students are familiar with basic drawing skills and may have used drawing tools in earlier classes.

Learning Resources and Materials

• Technical drawing board
• T-square
• Set squares (45° and 30°/60°)
• Pencils (HB and 2B)
• Eraser
• Drawing paper
• Compass and divider

Building Background/Connection to Prior Knowledge

The teacher will ask students if they have ever used drawing tools or created simple diagrams, linking their experiences to professional applications of technical drawing.

Embedded Core Skills

• Critical thinking
• Observational skills
• Creativity
• Precision in execution

Learning Materials

• Lagos State Scheme of Work for Technical Drawing
• Drawing tools and examples of completed technical drawings

Reference

• Lagos State Scheme of Work
• “Technical Drawing” by Frederick E. Giesecke and Henry C. Spencer (for visual examples and explanations)

Instructional Materials

• Visual aids showing different drawing tools
• Career role cards showing professions that use technical drawing

Content Outline

1. Definition of Technical Drawing: Introduction to technical drawing as a precise way of visually representing ideas, measurements, and technical specifications.
2. Career Opportunities:
   • Architecture
   • Engineering (mechanical, civil, electrical)
   • Industrial design
   • Urban planning
3. Drawing Materials:
   • Drawing Board: Flat surface for attaching drawing sheets.
   • T-square: Used for drawing horizontal lines.
   • Set Squares: For drawing angles (45°, 30°, 60°).
   • Compass and Dividers: Drawing circles, arcs, and measuring distances.
   • Pencils (HB and 2B): HB for lines, 2B for shading and darker lines.
   • Eraser: Correcting mistakes.

1. Understand Career Opportunities Requiring Technical Drawing Skills:
   • Explanation: Technical drawing skills are essential in many career fields. People in these fields use technical drawing to communicate ideas, design structures, and plan projects.
   • Examples:
     • Architects use technical drawing to create building plans, which show every detail required to construct a building.
     • Engineers (mechanical, civil, electrical, etc.) depend on technical drawings to design machinery, structures, or electronic components accurately.
     • Interior Designers use technical drawing to plan room layouts, furniture placement, and other spatial elements in interior spaces.
     • Fashion Designers also rely on technical drawing, known as “fashion flats,” to outline clothing designs with precise measurements and features.
2. Identify and Justify the Uses of Various Drawing Materials:
   • Explanation: Different materials and tools are necessary for technical drawing because each serves a specific purpose. Using the correct materials ensures accuracy, clarity, and ease of communication.
   • Examples of Drawing Materials:
     • T-square: This tool is used for drawing straight horizontal lines and serves as a guide for creating parallel lines.
       • Use Justification: T-squares help maintain accuracy in measurements, which is essential for clear communication in technical drawings.
     • Drawing Board: A flat surface that supports the drawing paper and tools.
       • Use Justification: A stable, flat surface prevents paper movement and keeps drawings neat and precise.
     • Set Squares (45° and 30°-60° triangles): These are used to draw specific angles, which are commonly needed in technical drawings.
       • Use Justification: Set squares help produce consistent angles, making it easier to create symmetrical shapes and detailed designs.
     • Compass: This instrument is used for drawing circles or arcs.
       • Use Justification: Compasses allow precise measurements, making it easier to create accurate circular shapes in technical drawings.
     • French Curves: These are used to draw smooth, irregular curves.
       • Use Justification: French curves are essential for producing flowing, organic shapes that cannot be easily drawn with a compass or straightedge.