Mastering the Basics of Board Practice in Technical Drawing SS 1 First Term Lesson Notes Week 3

Technical Drawing, SS 1, First Term, Week 3 on Board Practice:

Lesson Plan: Board Practice

Subject: Technical Drawing
Class: SS 1
Term: First Term
Week: 3
Age: 14-16 years
Topic: Board Practice
Sub-Topic: Fixing a Drawing Sheet, Sharpening Pencils, Drawing Borderlines, and Title Block
Duration: 40 minutes

Behavioral Objectives

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

1. Fix a drawing sheet to the drawing board properly.
2. Sharpen a pencil into a conical shape using sandpaper.
3. Draw borderlines and a title block on a drawing sheet.

Keywords

• Drawing board
• Borderlines
• Title block
• Sandpaper
• Pencil sharpening

Set Induction

The teacher will ask students if they have ever drawn on a drawing board or used sandpaper to sharpen pencils, followed by a short demonstration of each step involved.

Entry Behavior

Students are familiar with basic drawing tools and may have used them in other practical classes.

Learning Resources and Materials

• Drawing boards
• T-square
• Sandpaper
• Pencils (HB and 2B)
• Erasers
• Ruler
• A set of drawing sheets

Building Background/Connection to Prior Knowledge

Students are likely to have experience drawing or using basic drawing tools, so the teacher will build on their knowledge of how to prepare a workspace before beginning a drawing.

Embedded Core Skills

• Precision in execution
• Hand-eye coordination
• Manual dexterity
• Attention to detail

Learning Materials

• Lagos State Scheme of Work for Technical Drawing
• Examples of properly prepared drawing sheets with borderlines and title blocks
• Step-by-step guide on sharpening pencils using sandpaper

Reference

• Lagos State Scheme of Work
• “Technical Drawing” by Frederick E. Giesecke and Henry C. Spencer (for instructions on drawing and preparation techniques)

Instructional Materials

• Visuals of a well-organized drawing workspace
• Demonstration materials (drawing boards, pencils, sandpaper, rulers)

Content Outline

1. Fixing a Drawing Sheet to the Drawing Board:
   • The importance of securing the sheet to prevent it from shifting during drawing.
   • How to attach the sheet using drawing pins or clips.
2. Sharpening a Pencil into a Conical Shape Using Sandpaper:
   • Proper method to sharpen pencils to a conical shape (using sandpaper).
   • The purpose of sharpening pencils in this shape for clear, precise lines.
3. Drawing Borderlines:
   • Drawing a border around the edges of the sheet to contain the drawing.
   • The correct position of borderlines on the sheet (about 10mm from the edges).
4. Drawing a Title Block:
   • The title block should be drawn at the bottom right corner.
   • Key elements of a title block: name of the drawing, the drafter’s name, date, scale, and project information.

Fill-in-the-Blank Questions

1. A drawing sheet should be _____ to the drawing board before starting (a. ignored, b. glued, c. fixed, d. drawn).
2. When sharpening a pencil for technical drawing, it should be shaped like a _____ (a. square, b. cone, c. circle, d. triangle).
3. The _____ is used to secure the drawing sheet to the drawing board (a. eraser, b. paper clip, c. drawing pin, d. pencil).
4. The borderlines of a drawing sheet should be drawn _____ from the edge (a. 5mm, b. 10mm, c. 15mm, d. 20mm).
5. The title block is placed in the _____ corner of the drawing sheet (a. top left, b. top right, c. bottom left, d. bottom right).
6. A pencil sharpener is used to _____ the pencil (a. break, b. shape, c. erase, d. dull).
7. The purpose of drawing borderlines is to _____ the drawing (a. frame, b. shade, c. decorate, d. distract).
8. The title block contains information such as _____ (a. date, b. color, c. size, d. mood).
9. The drawing board should be placed on a _____ surface (a. soft, b. slippery, c. stable, d. uneven).
10. The _____ should be clear and easy to read in the title block (a. signature, b. title, c. picture, d. label).

Board Practice

1. Fix a Drawing Sheet to the Drawing Board:
   • Explanation: Securing the drawing sheet properly to the drawing board is an essential first step in creating a technical drawing. A well-secured sheet prevents unwanted shifts while drawing, ensuring neatness and precision.
   • Steps:
     • Place the drawing sheet on the board, ensuring it’s aligned with the edges.
     • Use drawing tape or clips to secure the paper at the corners to prevent it from moving.
     • Ensure that the paper is flat and smooth to avoid creases or wrinkles.
   • Why it’s Important: A fixed sheet allows for accurate lines and measurements without the paper shifting, which could lead to errors or inconsistencies in the drawing.
2. Sharpen a Pencil into a Conical Shape Using Sandpaper:
   • Explanation: Pencils need to be sharpened to a fine point for accurate and clear lines. Sharpening pencils into a conical shape allows for better control, producing fine, crisp lines suitable for technical drawing.
   • Steps:
     • Hold the pencil firmly and gently rub it against sandpaper, rotating the pencil as you go to create an even, conical point.
     • Continue until the pencil tip is sharp and fine, ensuring that it is not too blunt or too sharp, which can cause uneven lines.
   • Why it’s Important: A sharp pencil helps in creating clean, precise lines that are essential for technical drawings, making the drawing process more accurate and professional.
3. Draw Borderlines and a Title Block:
   • Explanation: Borderlines and title blocks are essential for organizing the drawing and providing important information about the drawing, such as the name, date, and scale. Drawing neat and accurate borders and title blocks helps in maintaining professionalism and clarity.
   • Steps:
     • Use a ruler or T-square to draw straight borderlines around the edge of the drawing sheet, leaving enough space for the title block at the bottom.
     • Draw the title block at the bottom right or left corner of the sheet, depending on the drawing standard.
     • Include essential information in the title block, such as the drawing title, name of the drafter, date, scale, and any other relevant details.
   • Why it’s Important: Borderlines and title blocks provide structure and clarity to the drawing. They help in identifying the drawing and keeping it organized, making it easier for others to read and understand.