Republic of the Philippines
Department of Education
REGION VIII – EASTERN VISAYAS
SCHOOLS DIVISION OF CATBALOGAN CITY
SAMAR NATIONAL SCHOOL
Catbalogan City
DETAILED LESSON PLAN IN SCIENCE 7
QUARTER 3
Content Standard:
Charges and the different charging processes
Performance Standard:
Suggest proper lighting in various activities.
I. OBJECTIVE:
A. Most Essential Learning Competency
Describe the different types of charging processes (S7LT-IIIj-13).
B. Instructional Objectives:
1. Identify the types of charges:
2. Describe the different charging processes:
3. Perform activities involving charging processes.
II. SUBJECT MATTER
Topic: Electric Charges and the Charging Process
KBI: Cooperation, teamwork, critical thinking
III. Learning Resources
A. Materials: Audiovisual set (laptop, projector and speakers),
picture of sorts, illustrations.
B. References: Grade 7 Science Learner’s Module pages 262-276
Grade 7 Science Teacher’s Material pages 306-314
IV.
PROCEDURE
Teacher’s Activity
1. Preliminary Activities
Learner’s Activity
May we all stand for the prayer. Who can lead the
prayer?
A student leads the prayer
Good morning class!
Good morning, ma’am!
You may now take your seat.
Thank you, ma’am.
Let me check the attendance first. Make sure that
you are in your proper seats so that you will not be
marked absent.
Very Good! Everybody is present.
(Check attendance using a seat plan)
Since we’re in pandemic let’s observe health
protocol;
First, wear your face mask.
Second, observe social distancing.
Third, always sanitized your hands.
2. Developmental Activity
A. Drill
Please read the following:
Student will read in chorus
 Electrostatic Law- Like charges repel and unlike
charges attract
 Law of Conservation of charge- Charges cannot be
created nor destroyed, but can be transferred from
one material to another.
 Positively charge- Charge of material that is losing
electrons
 Conductor- A material that permits charges to flow
freely.
 Charging by friction- Charging process involved
when rubbing of material to another.
 Negatively charge- Charge of material that is
gaining electrons.
 Charging by induction- Charging process without
actual contact to any other charged object.
 Electric force- Force which acts on charges.
 Triboelectric series- An arrangement of
materials/substances according to their ability to gain
or lose electrons.
 Insulator- Materials that hinder the free flow
charges within it.
 Charging by conduction- Charging process which
involves the contact of a charged object to a neutral
object.
 Attraction and Repulsion- Two kinds of electric
forces.
Thank you!
These are the term that we will encounter along
with our lesson class.
A. Elicit
In your previous lesson, you have learned about
heat as a form of energy that can be transferred
through conduction, convection and radiation. To
refresh your understanding of the previous lesson,
answer these following questions:
Teacher will call the student randomly to answer
these following questions.
COMPLETION
Directions: Fill in the blanks with appropriate
word/s to complete the paragraph. Choose your
answer from the word box below.
(1) ___________ is a thermal energy that is in
transit.
(2) ___________ takes place due to the vibrating
and colliding particles of objects that are in
contact. It can take place in solids, liquids, and
gases but it takes place best in solids.
(3) ___________takes place in fluids because their
particles can move around. While heat transfer by
(4) ___________ does not need particles or a
medium to take place. Also (5) ________ takes
place between objects of different temperature.
Heat
Convection Conduction
Radiation
Heat transfer
Students possible answer
(1) Heat is a thermal energy that is in transit.
(2) Conduction takes place due to the vibrating and
colliding particles of objects that are in contact. It can take
place in solids, liquids, and gases but it takes place best in
solids.
(3) Convection takes place in fluids because their particles
can move around. While heat transfer by (4) Radiation
does not need particles or a medium to take place. Also (5)
Heat Transfer takes place between objects of different
Very Good!
It seems that you learned something about heat temperature.
transfer.
B. Engage
Who among you here has a hairbrush or hair
comb? Kindly get your hairbrush or comb and try
to brush your hair for 2 minutes. Then, put the
hairbrush near the tiny bits of paper.
What have you observed?
The paper stick to the hair brush or comb.
How is this possible?
Student’s answer may vary
Yes, and that is our topic for today, Electric
Charges and the Charging Process.
So, class, before we start our lesson for today let
us first know what are we achieving today. Please
read our Instructional Objectives.
Thank you.
Students are reading the instructional objectives.
Instructional Objectives:
1. Identify the types of charges:
2. Describe the different charging processes:
3. Perform activities involving charging processes.
C. Explore
Let us do an activity first.
Directions: Every group assigned a different
activity. All you have to do is perform the activity
according to the procedures and report your
observation in front by answering the guide
question.
You have 10 minutes to perform the activity.
Students are starting doing their group activity.
Group 1
Activity 1
Charged interactions
Materials Needed:



Acetate
Tissue
Small strips of paper
Procedure:
1. Rub the tissue against the acetate.
2. Place the rubbed acetate above the strips of paper.
Q1. Is there any sign of interaction between the acetate
and strips of paper?
3. Try this with another object.
Q2. Is there any sign of interaction between the acetate
and this object?
4. Remove the strips of paper by wiping the acetate
with tissue.
5. Touch the rub portion of acetate after one minute.
6. Place the rubbed acetate above the strips of paper.
Q3. Do you still observe any interaction?
Group 2
Activity 2
To charge or not to charge
Materials Needed:






Acetate
Tissue
Aluminum foil
Coper wire
Jar
Adhesive tape
Procedure:
1. Make a cover for the glass jar through the acetate.
2. Cut the cover from the acetate.
3. Punch a hole to the center of the cover using the
copper wire.
4. Hook two pieces of aluminum strip at the bottom
end of the wire.
5.
6.
7.
8.
Secure the copper wire with adhesive tape.
Put the cover to the top of the jar.
Rub the tissue against the acetate.
Bring the rubbed acetate close to the copper wire
without touching it.
9. Remove your hand and observe how the balloon
and the can will interact.
Q1. What do you think is the charge acquired by the
acetate after rubbing it against the tissue?
Q2. What is the purpose of touching the can in step #4?
Q3. Were you able to charge the soft drink can? Explain
how this happened.
Q4. Based on your answer in Q1, what do you think is the
charge of the soft drink can?
Group 3
Activity 3
Pass the charge
Materials Needed:



2 Styrofoam cup
2 Soft drinks can
2 Balloon
Procedure:
Very Good everyone
D. Explain
Based on your presentation let us answer the
following questions:
Activity 1
Q1. Is there any sign of interaction between the
tape and the finger?
1. Repeat all steps in
Activity 2.
2. Let the charged
can set-up touch a
neutral can set-up
as shown in the
figure.
3. Separate the two
set-ups then observe how the charged balloon
interacts with the first and second set-up.
Q2. Is there any sign of interaction between the
Q1. Were you able to charge the can in the second set-up?
tape and this object?
Explain how this happened.
Q2. Is it necessary for the two cans to come into contact
Q3. Do you still observe any interaction?
for charging to happen? Why or why not?
Q3. From your observation in step 3, infer the charge
Very good!
acquired by the can in the second set-up.
How about on the activity 2?
Q1. What do you think is the charge acquired by
the balloon after rubbing it against your hair?
Student’s answers may vary.
Yes ma’am, strips of paper is attracted to the rubbed
Q2. What is the purpose of touching the can in step
acetate.
#4?
Once again, students will observe an attraction between
the acetate and the object.
Q3. Were you able to charge the soft drink can? Interactions observed earlier will be greatly reduced or
will be non-existent.
Explain how this happened.
Q4. Based on your answer in Q1, what do you
think is the charge of the soft drink can?
And lastly, Activity 3
The hair will give up electrons thus the balloon will
acquire a negative charge.
Q1. Were you able to charge the can in the second
By touching the can, a path was provided for the charges
set-up? Explain how this happened.
to be transferred. This is an example of grounding.
Q2. Is it necessary for the two cans to come into
contact for charging to happen? Why or why not?
Ideally, the soft drink can will be charged. The hand
provided a path for negative charges to move away from
the can thus when the hand was removed the can was left
Q3. From your observation in step 3, infer the with a net charge.
charge acquired by the can in the second set-up.
The soft drink can have acquired a net positive charge.
E. Elaborate
You have learned in previous modules that all
matter is made up of atoms or combinations of
atoms called compounds. The varying atomic
composition of different materials gives them
different electrical properties. One of which is the
ability of a material to lose or gain electrons when
they come into contact with a different material
through friction.
Ideally, the can in the second set up will be charged since
excess charges has been transferred to it from the can in
the first set up.
The contact between the cans is necessary since it is this
contact that has provided a path for the charges to be
transferred. This is possible because both cans are good
In activity 1, how the tape acquired a net charge electrical conductors.
when the tape was pulled vigorously from the
The can in the second set up has acquired a net positive
table?
charge.
Very good!
And how will you differentiate positively charged
from negatively charged based on your activity 1?
Very good!
The process involved is usually referred to as
charging up the material, and in this particular
activity What do you think is charging process Student’s answers may vary.
used?
It is important to remember that during the When you pulled the tape vigorously from the table, some
charging process, ideally, the amount of charge lost of the electrons from the table’s surface were transferred
by the table is equal to the amount of charge gained to the tape.
by the tape. This is generally true in any charging
process.
Based on activity 1, the table become positively charged
because it has lost some electrons while the tape has
This idea is also known as…
gained electrons which made it negatively charged.
When you brought your finger (and the other
object) near the charged tape, what have you Charging by friction which simply means rubbing of
observed on the tape?
material to another.
Very good!
We learned from the previous activity that the tape
is negatively charged. The excess negative charge
in the tape allowed it to interact with your finger
and the other object.
The Law of Conservation of Charge
Charges cannot be created nor destroyed, but can be
When you placed the two charged tapes near each transferred from one material to another. The total charge
other, What have you observe?
in a system must remain constant.
These observations tell us that there are two kinds
of electric force which arises from the fact that The tape was drawn towards your finger as if being pulled
there also two kinds of electrical charges.
by an invisible force.
This force is called electric force which acts on charges.
What do you think are they?
An uncharged or neutral object that has balanced positive
and negative charges cannot experience this force.
Yes, this interactions between the charges are
summarized through electrostatic law.
Anyone who has an idea about electrostatic Law?
But how will you know if an object will either gain
or lose electrons?
They seem to push each other away.
The behavior of a charged material depends on its
ability to allow charges to flow through it. A
material that permits charges to flow freely within
it, is…
Force of Repulsion and Force of Attraction.
In contrast to conductors, insulators are…
Electrostatic Law
Like charges repel and unlike charges attract.
By using the Triboelectric series were in it is an
arrangement of materials/substances according to their
Based on your observation in activity 2, which do ability to gain or lose electrons.
you think that used in materials in the activity are
conductors and which are insulators?
The observations you made had in Activity 2 a good electrical conductor. A good conducting material
depended on the fact that the balloon and the will allow charges to be distributed evenly on its surface.
Styrofoam are good insulators while the soft drink Metals are usually good conductors of electricity.
can and you are good conductors.
are materials that hinder the free flow charges within it. If
How do you think that the can was charged?
charge is transferred to an insulator, the excess charge will
remain at the original location of charging. This means that
Very good!
charge is seldom distributed evenly across the surface of
And the charging process used in this activity is an insulator. Some examples of insulators are glass,
porcelain, plastic and rubber.
called?
Very good!
How about in activity 3, what do you think is the The materials in the activity that are conductors is soft
drinks and me while the insulator are the balloon and
charging process you performed?
Styrofoam
Very good
Class, in what learning area/field of study this
lesson be applied?
Again class, what are the types of charging The can has become charged after we touched one of its
ends.
processes?
How do you feel about our lesson today?
Charging by induction where in an object can be charged
without actual contact to any other charged object.
E. Evaluate
Okay, since there are no questions lets have a quiz. Charging by conduction which involves the contact of a
charged object to a neutral object.
Get ¼ sheet of paper. And answer the following.
Test 1: Where I Belong!
Student’s answer may vary.
Charging by friction
Charging by induction
Charging by conduction
Student’s answer may vary.
Test 1: Where I Belong!
Directions: Complete the table below. Identify the
process of charging presented. Write your answer Directions: Complete the table below. Identify the
before the number.
process of charging presented. Write your answer before
the number.
Test 2. Multiple Choice
Directions: Choose the letter of the correct answer. Test 2. Multiple Choice
1. Which of the following is NOT a process of Directions: Choose the letter of the correct answer.
charging?
a. Induction
1. Which of the following is NOT a process of charging?
b. Friction
a. Induction
c. Convection
b. Friction
d. Conduction
c. Convection
d. Conduction
2. What do you call the process of transferring
charges between objects by rubbing?
2. What do you call the process of transferring charges
a. Proton transfer
between objects by rubbing?
b. Static discharge
a. Proton transfer
c. Charging by friction
b. Static discharge
d. Charging by induction
c. Charging by friction
d. Charging by induction
3. What do you call the process of charging
which involves the contact of a charged object to
a neutral object?
a. Proton transfer
b. Charging by Conduction
c. Charging by friction
d. Charging by induction
4. What do you call the process of charging
where an object can be charged without actual
contact to any other charged object?
a. Proton transfer
b. Charging by Conduction
c. Charging by friction
d. Charging by induction
5. What do you call the attraction or repulsion
between electric charges?
a. Friction
b. Conduction
c. Electric field
d. Electric force
3. What do you call the process of charging which
involves the contact of a charged object to a neutral
object?
a. Proton transfer
b. Charging by Conduction
c. Charging by friction
d. Charging by induction
4. What do you call the process of charging where an
object can be charged without actual contact to any other
charged object?
a. Proton transfer
b. Charging by Conduction
c. Charging by friction
d. Charging by induction
5. What do you call the attraction or repulsion between
electric charges?
a. Friction
b. Conduction
c. Electric field
d. Electric force
After 3 minutes.
Let’s check. Exchange your paper with your
seatmate.
Very good
F. Extend
Cite another sample where charging processes is
present? Write your answer in a 1 whole sheet of
paper.
That’s all for today
Good bye, class
Thank you and good bye, teacher.
V.
Remarks
VI.
Reflection
Prepared by:
EDESSA D. MASINAS
SST I
NOTED:
BRIGIDA C. SINGZON
Science Head Teacher
RUTH D. CABANGANAN
Principal