Final Demonstration
Final Demonstration
Final Demonstration
I. Objectives
At the end of the lesson, the students will be able to:
1) define the angle of elevation and identify its parts;
2) appreciate the importance of angle of elevation to real-life situations; and
3) illustrate the figure from the given worded problem
II. Subject Matter:
Topics : Angle of Elevation
References : Mathematics Learning Module 9 Quarter 4 Modules 3-4 on
pages 6-8
Mathematics Learner’s Material 9 (pages 457-461)
Materials : PowerPoint presentation, Visual Aids, Board, chalk,
Activity worksheets
III. Procedure
Teacher’s Activity Student’s Response
A. Preliminary Activities
1. Greetings
Good morning class. Good morning, Ma’am.
3. Classroom Management
Arrange your chairs (The students will arrange their chairs).
properly and make sure
there are no trashes around
them.
4. Checking of Attendance
5. Classroom Rules
Before we continue to our
discussion. Let me remind
you our classroom rules that
you need to follow while
class is going on.
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1. Raise your hand if you
want to answer.
2. Avoid unnecessary noise
during the activity.
3.Be honest at all times.
B. Recall
C. Motivation
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trial.
Example:
Try go no me tree
Yes, Kenneth?
Trigonometry Ma’am.
That’s right.
Do you understand the mechanics
of our activity? Yes, Ma’am.
1. ang gel
2. ob sear bear “Angle Ma’am”.
3. luck app “Ma’am the answer is observer”
4. who ree son tall “Look up”
5. lie off cite “It’s horizontal Ma’am”
6. I’ll leave bay shawn “Line of sight Ma’am”
“Elevation, Ma’am.
Great job, everyone. Thank you for
participating in our activity.
Yes, Amil?
I think our topic for today is Angle of
Elevation.
That’s correct. Our lesson for
today is about The Angle of
Elevation.
D. Lesson Proper
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Correct, he is Sakuragi.
Very Good.
SPORTS TRIVIA:
Yes Emelyn?
(Emelyn will read the definition)
Angle of Elevation
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Right! you may sit down.
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Ace and Angelica, come here at
the front.
Look at each other’s eyes.
Class, what imaginary line did it
formed when they look into each
other’s eyes? Horizontal line Ma’am.
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we have discussed?
Yes,KC? Horizontal line and line of sight.
Anyone?
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examples that relates to angle of
elevation for a certain place or
situation that will flash on the
screen.
Do you understand?
Yes, Ma’am.
Examples:
1. In Enriquez Park
2. In Jollibee
Example 1:
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Sakuragi is about to shoot the ball
from the free-throw line. The
distance from the free throw line to
the base of the backboard is 15 ft.
and the angle of elevation from the
top of the backboard to Sakuragi’s
eyes is 21°. Can we help Sakuragi
to shoot the ball by identifying the
horizontal line, line of sight, and
angle of elevation?
Yes, John?
It is the distance between the free throw
Correct, that is the distance of free line and the base of the backboard.
throw line to the backboard which
is 15 feet.
Yes, Kenneth?
The representation of line of sight is
What represents the angle of Sakuragi looking at the top of the
elevation? backboard
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Yes, Trixia?
Very Good. The angle of elevation It is the 21° angle between the top of the
measures 21°. backboard and Sakuragi’s eyes.
Example 2:
A kite is flying at an angle of
elevation of 55° with the ground. If
85 ft string have been paid out to
the kite. How far is the kite above
the ground?
Given:
a. What represents the horizontal
line? (The students will recite their answers)
b. What represents the line of
sight? a. The ground
c. What represents the angle of b. The string of the kite which is 85 ft
elevation c. The angle between the string of the kite
d. What is being asked in the and the ground which is 55 °
problem? d. The distance of the kite above the
ground
That’s great.
E. Application
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Group 1 and 3 will answer the Set
A and Group 2 and 4 will answer
the Set B. Once done with the
activity, you may paste your works
on the board. After that, I will
choose a representative for each
team to justify their work. If your
team got the correct answer, I will
give you a surprise reward later.
Do you understand my
instructions?
Set B:
The angle of elevation from a boat
to the top of 92-meter hill is 12°.
How far is the boat from the base
of the hill?
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Okay, time is up please put your
work sheets on the board and
present your work.
F. Generalization:
I know you’ve learned a lot from
our discussion today.
Who can give me a definition of an
angle of elevation?
Yes, Andrea?
Angle of elevation is an angle that is
formed between the horizontal line and
Very good. How can you describe
line of sight.
the horizontal line?
Yes, Jesus?
It is a straight line drawn from left to right.
You are correct. How about your
understanding about the line of
The line of sight in angle of elevation is
sight in angle of elevation?
when looking up. It is also the line
Yes Emelyn?
between the observer and the object.
Can you cite examples of angle of
elevation?
Yes, Ian?
(Ian will cite his example of angle of
What is the importance of angle of
elevation)
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elevation in real life situations?
It is important because it can be used in
finding the distance and also the height
and measurement of objects or things.
Illustrate the figure from the
worded problem.
No, Ma’am.
IV. Evaluation
Answer the following in 10 minutes.
On your worksheets,
I. Write LOOK UP if the statement
shows the angle of elevation and
write NOT LOOK UP if it is not. Answers:
1. Luna saw an airplane in the sky. I.
2. Sevi is playing with his kite. 1. LOOK UP
3. A hiker on top of the mountain 2. LOOK UP
saw a house down in the mountain. 3. NOT LOOK UP
4. Kalix is looking at the windmill in 4. LOOK UP
Ilocos and he is very amazed.
II.
II. Illustrate the given problem.
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V. Assignment
In your math notebook,
I. Read and study the Angle of
Depression.
II. Draw a Venn Diagram to compare
the Angle of Elevation and the Angle
of Depression.
Prepared by:
Ma. Ricarhaya C. Mangahas
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