Lesson Notes By Weeks and Term - Senior Secondary 2
Pictorial views 1
Pictorial views 1
TERM – 1ST TERM
WEEK NINE
Class: Senior Secondary School 2
Age: 16 years
Duration: 40 minutes of 5 periods each
Date:
Subject: Technical Drawing
Topic: PICTORIAL VIEWS 1
SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to
I.) Define pictorial drawing
II.) Discuss the types of pictorial drawing.
III.) Describe the methods of constructing isometric drawing.
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 pictorial drawing and identify the types. |
Students listens attentively to the teacher |
|
STEP 2 EXPLANATION |
Teacher discusses the methods of constructing isometric drawing. |
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
PICTORIAL VIEWS 1
Pictorial drawing is a type of technical drawing that represents an object in a 3-dimensional form on a 2-dimensional surface. It aims to give a realistic representation of an object by showing its height, width, and depth. This type of drawing is often used in engineering, architecture, and design to communicate ideas visually.
Pictorial views are divided into two phases: isometric projection for three-dimensional representation (other 3D includes; oblique and perspective drawing) and orthographic projection for two-dimensional representation—each providing distinct perspectives of an object's form and structure.
Isometric Drawing
This type of drawing represents objects in a 3D space using a series of lines drawn at equal angles to each other. All three dimensions (length, width, and height) are represented equally, resulting in a distorted view compared to the true proportions of the object.
Methods of Constructing Isometric Drawing
The methods used are:
Box Method
When an object contains a number of non-isometric lines, the isometric drawing may be conveniently constructed by using the box method. In this method, the object is imagined to be enclosed in a rectangular box and both isometric and non-isometric lines are located by their respective points of contact with the surfaces and edges of the box.
Off-set Method
Off-set method of making an isometric drawing is preferred when the object contains irregular curved surfaces. In the off-set method, the curved feature may be obtained by plotting the points on the curve, located by the measurements along isometric lines.
EVALUATION: 1. Draw the bolster block shown below in isometric projection using X as the lowest point.
CLASSWORK: As in evaluation
CONCLUSION: The teacher commends the students positively