School
CAVITE NATIONAL HIGH SCHOOL
LESSON
EXEMPLAR
SHERYL B. RODILLO
Teaching Date
Teaching Time
Monday
November 30, 2023
12-30-7:00 PM
Tuesday
Wednesday
Grade
Level
Learning
Area
Quarter
10
SCIENCE 10
1st
No. of
Days
Thursday
1
Friday
I. OBJECTIVES
A. Content
Standards
The Learners demonstrate an understanding of the different regions of
the electromagnetic spectrum
B. Performance
Standards
C. Learning
Competencie
s or
Objectives
D. Most
Essential
Learning
Compete
ncies
(MELC)
(If available, write the
indicated MELC)
E. Enabling
Competencies
(If available, write the
attached enabling
competencies)
II. CONTENT
At the end of the lesson, learners are expected to:
A. Discuss practical applications of each electromagnetic wave which are
essential in our daily living.
B. Cite examples of practical applications of each electromagnetic wave
which are essential in our daily living.
C. Realize the impact of electromagnetic waves in our daily lives.
Cite examples of practical applications of the different regions of EM waves in
telecommunication.
N/A
PRACTICAL APPLICATION OF DIFFERENT REGIONS OF EM
WAVES
III. LEARNING
RESOURCES
A. References
a. Teacher’s
Guide Pages
b. Learner’s
Material Pages
Learner's Module pp. 11-16
Learner's Module pp. 11-16
c. Textbook Pages
N/A
d. Additional
Materials
from
Learning
Resources
N/A
B. List of Learning
Resources for
Development and
Engagement
Activities
https://www.youtube.com/watch?v=CQV8PWRBhDc
IV. PROCEDURES
A. Introduction
A. DAILY ROUTINE
1. Prayer
2. Checking of Attendance
3. Grouping
B. Recall
Direction: Look at the picture below, write the name of the correct
Electromagnetic wave corresponding to the letters on the picture. You may
refer to your answer for numbers 1-7 from the box.
MOTIVATION Word Search
Direction: Look for the name of devices hidden in the puzzle below. The
words may be placed vertically, horizontally, diagonally, or even backwards.
Write ten (10) terms you found in the word box below.
B. Development
Guide question:
What do you think are these devices for? What form of EM waves make
them work?
Learning Task 1 “Behind the White Light”
What you need:
 ▪ water
 ▪ sunlight or flashlight
 ▪ shallow pan
 ▪ small mirror
 ▪ piece of paper or white surface
What to do:
1. Before doing this activity, read the guide questions below.
2. Fill the shallow pan with water about half full.
3. Put the mirror into the water inside the pan at an angle.
4. Position the pan so that sunlight/flashlight shines directly where the mirror is
under water. You may have to shift the mirror to find the right angle.
5. Hold the white paper above the mirror. It would be easier to see if the room
is dark.
6. Adjust the angle of the mirror until you see a rainbow. Observe.
Prism is a triangular piece of glass that is used to separate white light.
From
the activity above, which materials served as a prism?
_________________________________________
B. Explain why white light splits up into different colors when it goes
through a
prism?
_______________________________________________________________
____________
C. Write down the color spectrum you observed in proper order from top
to
bottom.
_______________________________________________________________
____________
10
D. What color bends the least?
_______________________________________________________________
___
E. What color bends the most?
_______________________________________________________________
___
Learning Task 2 Radio Transmitter and Receiver Parts
Materials: Diagrams of radio transmitter and receiver parts
Instructions:
1) Study the diagrams of a radio transmitter and receiver.
2) Identify and label the different parts of each device.
3) Explain the function of each part in the transmission and reception of radio
waves.
1. Generalization
Direction: Complete the flow chart showing the processes of radio
broadcasting and communication using the words below. Do this on a
separate sheet of paper.

Radio waves are generated artificially by an electronic device called a
transmitter, which is connected to an antenna which radiates the waves.
They are received by another antenna connected to a radio receiver,
which processes the received signal.
2. Application
How do electromagnetic waves impact our everyday living?
C. Assimilation
POST TEST
Direction: Read the following questions carefully and choose the letter of
the correct answer.
1. Which of the following is the correct application of radio waves?
A. camera auto focusing C. diagnosis of bone fractures
B. radio broadcasting D. sterilization of medical instrument
2. Which band of frequency is suitable for communication over great distances?
A. low frequency
C. very low frequency
B. medium frequency D. extremely low frequency
3. Which among the following transforms AF signal and RF carrier wave to a
modulated carrier wave
A Amplifier
C. Modulator
B. Antenna
D. Demodulator
4. Which among the following transmits and receives radio waves?
A. Amplifier
C. Modulator
B. Antenna
D. Demodulator
5. How do electromagnetic waves impact our everyday living??
A. EM has no use in our everyday lives.
B. EM has a vast range of practical everyday applications.
C. EM moves in the direction of the vibrations of both the electric and magnetic
oscillating field vectors.
D. EM moves in any direction.
1. REFLECTION
Write this portion in the learner’s journal.
I understand that ________________
I realize that _________________
I want to learn more about _________________
Prepared by:
Approved by:
Noted by:
SHERYL B. RODILLO
Teacher I-Science Department
NESTOR DONIÑA
Master Teacher I
JOCELYN P. IBAÑEZ
Head Teacher VI