The document is a detailed lesson plan for an 8th grade Technology and Livelihood Education class on Orthographic Projections. The lesson plan outlines objectives, content, learning resources, procedures, assessment, and reflection. The procedures section describes teacher and student activities for reviewing concepts, motivation, pre-activities, post-activities, deepening understanding, developing mastery, application, and generalization. Key concepts covered include planes of projection, first and third angle projections, principal views, and analyzing orthographic drawings. Formative assessment questions are provided to evaluate student learning.

1. Detailed Lesson Plan (DLP)
TUP TAGUIG
BTVTE/TLE
LESSON PLAN
School Kalayaan National High School Grade Level 8
Teacher Baculio, Princess Lala M. Learning Area TLE - Technology and Livelihood
Education
Date
Time
15/02/2022 Quarter 3rd Quarter
I. OBJECTIVES
A. Content Standards
 Theories and principles of orthographic projections
 Orthographic Projections
B. Performance Standards
Orthographic and pictorial drawings are interpreted according to drawing standards.
C. Learning
Competencies /
Objectives.
Write the LC code for each
At the end of this lesson, students should be able to;
1. (knowledge objective) Define Orthographic Projections
2. (attitude objective) Analyze the difference between the Orthographic Projections.
3. (skills objective) Demonstrate the Orthographic Projections.
II. CONTENT
Theories and principles of orthographic projections Orthographic Projections
III. LEARNING RESOURCES TESDA Training Regulations Mechanical Drafting NC!. pdf
K to 12 Mechanical Drafting Learning Module. pdf

2. A. References TLE learning modules 3RD Quarter - Grade 8
K_to_12_mechanical_drafting_learning_module.pdf
1. Teacher’s Guide pages INDUSTRIAL ARTS - MECHANICAL DRAFTING pp. 14
2. Learner’s Materials pages TLE - Grade 8 learning module 1: pp. 85- 91
3. Textbook pages Mechanical Drafting Lesson 3: pp. 85- 91
4. Additional Materials from
Learning Resource (LR) portal
https://gltnhs-tle.weebly.com/lesson-43.html
B. Other Learning Resources Laptop, Cellphone, PowerPoint presentation, and PDF files
V. PROCEDURES
Teacher’s Activity
Student’s Activity
A. REVIEW
(Reviewing previous lesson or
presenting the new lesson)
Before we start can anyone lead the prayer?
Yes, Michael?
So, Good morning! How was your day?
Alright that’s good!
Let us bow our head, close our eyes and let
us pray... In Jesus name we pray, AMEN!
All: Good morning ma’am! Good ma’am

3. Before we proceed to our next topic, let’s have a quick
review about our lesson last meeting.
Instruction: I will present a Four (4) questions on your screen,
If you want to answer please raise your hand.
1. A geometrical figure composed of two straight lines
intersecting at one of their extremities.
A. Circle
B. Angle
C. Perpendicular lines
D. Radius
Yes, Michael?
Very Good!
2. A closed curve where all points are equally distant from the
center.
A. Circle
B. Geometric
C. Perpendicular lines
D.Radius
Michael: Ma’am the answer is letter B. Angle, a
geometrical figure composed of two straight
lines intersecting at one of their extremities.

4. Yes, Nicole?
Good Job!
3. length of a straight line connecting the center of a circle
with a point on the circumference of a circle.
A.Circle
B.Geometric
C.Perpendicular lines
D.Radius
Yes, James?
Great!
Last item.
4. lines which make a 90 degrees angle with each other
A. Circle
B.Geometric
C.Perpendicular lines
D.Radius
Nicole: Ma’am the answer is letter A. Circle, a
closed curve where all points are equally
distant from the center.
James: Ma’am the answer is letter D. Radius, a
length of a straight line connecting the center of
a circle with a point on the circumference of a
circle.

5. Yes, John?
Very Good!
John: Ma’am, the answer is letter
C.Perpendicular lines, lines which make a 90
degrees angle with each other.
B. M O T I V A T I O N
(Establishing a purpose for the
Lesson)
To start our new lesson, let’s have our icebreakers
Instruction: Once I present a slide anyone who want to
answer may raise their hands , every students who want to
answer will be given a 7 seconds to guess the jumbled
word.
ALTFRNO ENALP
Yes, Knight?
Very Good!
TALZONHORI ENALP
Yes, Khail?
Great!
FIELPOR ENALP
Knight: Ma’am, the answer is frontal plane.
Khail: Ma’am, the answer is horizontal plane

6. Yes, Knox?
Very Good!
Knox: Ma’am, the answer is profile plane.
C. PRE-ACTIVITY/ACTIVITY
(Presenting examples/
instances of the new lesson)
Guess the picture: Guess the picture using the jumbled word
as a clue .
IACOHRTHRGPO EWVI
Yes, Anakin?
Very Good!
Anakin: Ma’am, the answer is orthographic
view.

7. SAENPL OF IRJTPNOOCE
Yes,Evelyn?
Great!
Evelyn: Ma’am, the answer is Planes of
Projection.
D. POST ACTIVITY
(Discussing new concepts and
practicing new skills #1)
For this lesson, we will discuss about the Theories and
Principles of Orthographic Projection and Orthographic
projections.
Anybody have an idea what is Orthographic Projection ?
Yes, Knox?
Very Good!
Knox: Ma’am, a method of projection in which
an object is depicted or a surface mapped
using parallel lines to project its shape onto a
plane.

8. Just like Knox said an Orthographic Projection is a
method or a system for graphical representation of an
object by a line drawing on a flat surface. Orthographic
projection technique can produce either pictorial drawings
that show all three dimensions of an object in one view, or
multi-views that show only two dimensions of an object in a
single view.
And an Orthographic View is a drawing that shows a side of
an object viewed directly from 90 degrees.

9. Or when the viewing planes are parallel to these principal
planes.
There are Six (6) Principal Views of an Object, can
anyone tell us what are those?
Yes, Michael?
Very Good!
Object is suspended in a glass box producing six principal
views: each view is each view is perpendicular to and
aligned with the adjacent views.
Michael: Ma’am the Six (6) Principal Views of
an Object are Top, Bottom, Front, Rear, Left
and Right.

10. Unfolding the glass box to produce six- view drawing
Top, front and bottom views are all aligned vertically and
share the same width dimension.
Rear, left side, front and right side views are all aligned
horizontally and share the same height dimension.

11. In addition, Unfolded Planes, the planes unfolded and laid
flat, the front view is above the top view.
Can anyone tell us about the plane of projection?
Yes, James?
Yes, Very Good!
Frontal plane projection
James: Ma’am there are three planes of
projection are used in orthographic drawing.
These are called the horizontal plane, frontal
plane, and the profile plane.

12. is the plane onto which the Front View (FV) of the multi-
view drawing is projected. Front view of an object shows
the width and height dimensions
Horizontal plane of projection

13. is the plane onto which the Top View of the multi-view
drawing is projected.
Top view of an object shows the width and depth
dimensions.
Profile plane of projection
In multi-view drawings, the right side view is the standard
side view used.
The right side view of an object shows the depth and the
height dimensions. The right side view is projected onto the
profile plane of projection, which is a plane that is parallel to
the right side of the object.

14. In addition, The planes of projection join and form
quadrants. The quadrants are called first angle, second
angle, third angle, and fourth angle. The first and the third
quadrants are used for drafting purposes.

15. Next is the Overall Size of the Object. The Height, Width
and depth.
Can anyone tell us what is Height?
Yes, John?
Yes, Very Good!
What about the Width?
Yes, Nicole?
Good!
What about the Depth ?
Yes, Knox?
That’s right!
Width is associated with an object’s side-to-side dimension.
Height is the measure of an object from top-to-bottom.
Depth is associated with front-to-back distance
John: Ma’am, Height s the perpendicular
distance between two horizontal planes
Nicole: Ma’am, width is the perpendicular
distance between two profile planes.
Knox: Ma’am, Depth is the perpendicular
distance between two frontal planes.

16. There are two (2) Angle Projections which are the first-
angle projection ( ISO Standard ) and third-angle Projection
(ANSI)
Can anyone read the first-angle projection ( ISO
Standard ) ?
Yes, Von?
Von: Ma’am, The first-angle projection is a
system of orthographic projection used by the
European countries which places the object on
the first quadrants.

17. Thank you!, Von.
First Angle Projection (below). The view is displayed on
opposite side as it is seen from. An alternative way to
understand it: Roll the object on the paper, then draw the
view as you see it.
The picture below is a symbol use for first angle.

18. What about the third-angle Projection (ANSI)?
Yes, Eugene?
That’s right!
Third Angle Projection (below). The view is displayed on
same side as it is seen from.
The picture below is a symbol use for third angle.
Eugene: Ma’am, The third-angle projection is a
system used in the United States which places
the object in the third quadrants

19. E. DEEPENING
(Discussing new concepts and
practicing new skills #2)
I will present a picture and you have to analyze it in
2minutes.
2minutes done now can anyone draw the Frontal plane,
Profile plane and horizontal plan in an Unfolded Planes.
You can send it in our group chat.
Yes, Von?

20. Very good!
Von: Ma’am, here

21. F. DEVELOPING MASTERY
(Developing mastery (Leads
to
Formative Assessment 3)
I will presenting a picture and you will analyze it in 2minutes
2minutes done now can anyone draw the Frontal plane,
Profile plane and horizontal plan in an Unfolded Planes.
Yes, Von? Von : Ma’am, here.

22. Very Good!
G. APPLICATION
(Finding practical
applicationsof concepts
and skills in daily living)
I will presenting a picture and you will analyze it in
2minutes.
Can anyone draw the Top and bottom View of the drawing?
kindly send it to our group chat.
Yes, Knox?
Knox: Ma’am, here

23. Very Good!
What about the front and rear of the drawing?
Yes, Michael?
Very Good!
What about the left and right side?
Yes, Nicole?
Very Good!
Michael: Ma’am, here
Nicole: Ma’am, here
H. GENERALIZATION
(Making generalizations and
abstractions about the lesson)
Planes of Projection - three planes of projection are used in orthographic drawing. These are called the horizontal
plane, frontal plane, and the profile plane. First-Angle Projection (ISO Standard)The first-angle projection is a system
of orthographic projection used by the European countries which places the object on the first quadrants. Third-angle
Projection (ANSI)The third-angle projection is a system used in the United States which places the object in the third
quadrants.

24. I. ASSESSMENT
(Evaluating learning)
DIRECTION: The test consists of questions carefully designed to help you self-assess your comprehension of the
information presented on the topics covered in this course. Each question in the quiz is of multiple-choice format.
Read each question carefully and write only the letter of the “best answer” in your answer sheet.
1. The system for graphically representing an object by line drawing on a flat surface.
a. Orthographic Projection c. Multi-view Drawing
b. Pictorial Drawing d. Isometric Drawing
2. Standard projection used by many European countries (ISO Standard).
a. Orthographic Projection c. Isometric Projection
b. Third-angle Projection d. First-angle Projection
3. The common views used in multi-view drawing are ______________.
a. front, top, and sides c. front, sides and rear
b. front, rear and sides d. front, top and rear
4. The orthographic view drawn directly above the front view.
a. Auxiliary view c. Right side view
b. Top View d. Left Side View
5. Standard of projection used by Americans, British and Canadians (ANSI Standard).
a. First-angle Projection c. Diametric Projection
b. Orthographic Projection d. Third-angle Projection

25. 6. Which of the following does not belong to the group?
a. Top and Bottom c. Left and Right
b. Rear and Front d. Frontal and profile
7. Von want to use a quadrant for his drafting subject, what quadrants he need to choose?
a. Second and third quadrants c. First and Second quadrants
b. First and third quadrants d. Third and fourth quadrants
8. Orthographic view is drawn by projecting the edge of the object perpendicular to these
planes of projection.Except one.
a. Horizontal plane c. Profile plane
b. Frontal plane d. Unfolded plane
9. the symbol below is used in what angle of projection?
a. First-angle Projection c. Third-angle Projection
b. Second-angle Projection d. Fourth-angle Projection
10. the symbol below is used in what angle of projection?
a. First-angle Projection c. Third-angle Projection
b. Second-angle Projection d. Fourth-angle Projection

26. J. REMEDIAL
Additional activities for
application or remediation
 Assignment/Agreement
( minutes). Fill-in
below any of the four
purposes
 Reinforcing /
strengthening the day’s
lesson
 Enriching / inspiring theday’s
lesson
 Enhancing / improving theday’s
lesson
Preparing for the new lesson
V. REMARKS
VI. REFLECTION
A. No.of learners who earned80% on
the formative
assessment.
B. No.of learners who require
additional activities for
remediation.
C. Did the remedial lessons work?No.of
learners who have caught
up with the lesson.
D. No.of learners who continue
to require remediation
E. Which of my teaching strategies
worked well? Why did
these work?
F. What difficulties did I encounter
which my principal or
supervisor can help me solve?
G. What innovation or localized
materials did I use/discover which I
wish to share with other
teachers?