This document outlines an activity to help students understand the concepts of angle of elevation and angle of depression. The activity involves students finding classmates at their eye level or taller/shorter, then illustrating tall and short objects outside. They are expected to differentiate elevation and depression angles, link them to real-life contexts, and illustrate the concepts. Key terms like line of sight, elevation angle, and depression angle are defined. Examples are given and students must identify these angles in diagrams. Finally, a math problem applies the elevation angle concept.

3. Review:

4. At the end of the demonstration, the students are
expected to:
• Differentiate the concept of angle of elevation and
angle of depression
• Link the concept of angle of elevation and
depression in real life context
• Illustrate the concept of angle of elevation and
angle of depression.

5. “Look up, Look
Down”.

6. Step 1
Move around the room and find a classmate that is at
the exact height as your eyes and write the
name of your classmate. (At least 5)
Classmate:
1.
2.
3.
4.
5.

7. •Find a classmate that is
taller than you and write
the name of that
classmate. (At least 5)
Step 2

8. Look outside the room and make an
illustration of (at least 4)
• Tall objects/structures
• Short objects/structures
Step 3

9.  What is/ are the difference(s) between
the three steps in the activity?
 What is your basis in determining short and long
objects?
Analysis
 Do you think that you can directly measure the
height, the distance of the objects you have listed in
the activity?

10. •Line of sight- is an imaginary line
that connects the eye of an
observer to the object being
observed.
•Angle of Elevation- is the angle
from the horizontal to the line of
sight of the observer to the
object above.
•Angle of Depression- is the angle
from the horizontal to the line of
sight of the observer to the
object below.

11. Tiny is watching the stars.
Anna is looking into a 10ft
building.
Fiona is looking at her dog.
Angle of Elevation
Angle of Elevation
Angle of Depression

12. Evaluation:
In the following figures, identify the segment that
represents the line of sight, and identify the angles that
represent the angle of elevation or angle of depression.
Figure Angle of
Elevation
Angle of
Depression
Line of
Sight
L
K
O A
B
J
M

14. At the end of the demonstration, the students are
expected to:
• Differentiate the concept of angle of elevation and
angle of depression
• Link the concept of angle of elevation and
depression in real life context
• Illustrate the concept of angle of elevation and
angle of depression.

15. Assignment: ½ Crosswise
A tower is 15.24 m high. At a certain
distance away from the tower, an
observer determines that the angle of
elevation to the top is 41. How far is the
observer from the base of the tower?