Download dA Chapter 3: Electricity and Magnetism Duration: 10 days Day 1

dA
Chapter 3: Electricity and Magnetism
Duration: 10 days
Day 1
I.
Objectives
1. Identify the kind of materials that make up a good electromagnet
2. Identify the ways by which the materials can be connected to produce a good
electromagnet.
3. Construct a simple electromagnet
4. Show perseverance and interest in observing how electromagnets are
connected
II.
A. Materials:
nails big and small
Thin copper wire
Big copper wires
Dry cells big and small
B. References:
CG S5FE-III i-j-9
Science and Health p.162
Science for Daily Use pp.160-161
https://www.google.com.ph/#q=activity+on+electromagnets
C. Process Skills:
Observing
Comparing
Inferring
D. Values Integration
Resourcefulness in producing recycled materials
Patience in using and connecting different materials
III.
Learning tasks
A. Engagement
Show picture of 3 kinds of knives to be used in slicing vegetables for vegetable
salad.
Ask the following questions:
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1. Which knife do you prefer to use in preparing vegetable salad? Why?
2. Is it important to use appropriate materials?
B. Exploration
1. Divide the class into 4 groups
2. Distribute LM copies of the activity
3. Give instructions/guide in doing the activity
4. Let the pupils do activity 1 of LM
C. Explanation
Background information
An electromagnet is a type of magnet in which the magnetic field is produced
by an electric current. The magnetic field disappears when the current is turned
off. Electromagnets usually consist of a large number of closely spaced turns of
wire that create the magnetic field.
You have just made a magnet by using electricity. When you
disconnected one end of the wire from the battery, the current did not flow
anymore. The nail could no longer attract the pins. Its magnetic force was gone.
An electromagnet can have magnetic force only when electric current is flowing
through it.
Important
or ideal materials in producing a good electromagnet are the following:
Day
2
Exploration
Nail – is the core around which the wire is coiled
Wire- the conductor where the current flow
1. Divide the class into 4 groups
2.Battery-supplies
Distribute LMelectric
copiescurrent
of the activity
3. Give instructions/guide in doing the activity
4. Let the pupils do activity 2 of LM
EXPLANATION
dA
Background information
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The
magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number
of closely spaced turns of wire that create the magnetic field.
You have just made a magnet by using electricity. When you disconnected one end of the wire
from the battery, the current did not flow anymore. The nail could no longer attract the pins. Its magnetic
force was gone. An electromagnet can have magnetic force only when electric current is flowing through
it.
Important or ideal materials in producing a good electromagnet are the following:
Nail – is the core around which the wire is coiled
Wire- the conductor where the current flow
Day 3electric current
Battery-supplies
EXPLORATION
1. Divide the class into 4 groups
2. Distribute LM copies of the activity
3. Give instructions/guide in doing the activity
4. Let the pupils do activity 3 - electromagnets of LM
EXPLANATION
Background information
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The
magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number
of closely spaced turns of wire that create the magnetic field.
You have just made a magnet by using electricity. When you disconnected one end of the wire from
the battery, the current did not flow anymore. The nail could no longer attract the pins. Its magnetic force
was gone. An electromagnet can have magnetic force only when electric current is flowing through it.
Important or ideal materials in producing a good electromagnet are the following:
Day 4
Nail – is the EXPLORATION
core around which the wire is coiled
1. Divide
the class
into 4 groups
Wire- the conductor
where
the current
flow
Battery-supplies electric current
dA
2. Distribute LM copies of the activity
3. Give instructions/guide in doing the activity
4. Let the pupils do activity 4- electromagnets of LM
EXPLANATION
Background information
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
The magnetic field disappears when the current is turned off. Electromagnets usually consist of a
large number of closely spaced turns of wire that create the magnetic field.
You have just made a magnet by using electricity. When you disconnected one end of the wire
from the battery, the current did not flow anymore. The nail could no longer attract the pins. Its
magnetic force was gone. An electromagnet can have magnetic force only when electric current is
flowing through it.
Important or ideal materials in producing a good electromagnet are the following:
Nail – is the core around which the wire is coiled
Wire- the conductor where the current flow
Battery - supplies electric current
Day 5
ELABORATION/EXTENSION
Draw a line to connect the materials to the box for like if the material is good for
constructing an electromagnet, unlike if is the material does not make a good material
for electromagnet.
`
Small nail
Big nail
Thin copper wire
like
Small battery
unlike
Big battery
e
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EVALUATION
Put a check on the statement that shows a good component of an electromagnet.
1. A good electromagnet is composed of a small battery, big nail and a big battery.
2. A good electromagnet is composed of thin wires, big nail and small battery.
3. A. good electromagnet is composed of a small battery , small nail, thin wires.
4. A good electromagnet is composed of a big battery , small nail, thin wires.
5. A good electromagnet is composed of a big battery , small nail, thin wires.
IV.
ASSIGNMENT
Look for any device at home that you no longer use like malfunctioned remote
control. Inspect the part that may have caused malfunction. Write it down and report to
the class.
Day 6
I.
OBJECTIVES
1. Conduct an experiment to show variables that affect the strength of an
electromagnet.
2. Conduct a simple and useful electromagnet.
3. Name the different uses of an electromagnet.
II.
A. Materials:
Batteries of four different volts
pencil
thin, insulated wire.
Copper wire
nails
B. References:
CG S5FE-III i-j-9
Science spectrum5 pp.200-201
https://www.google.com.ph/#q=activity+on+electrom
agnets
C. Process Skills:
Observing
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comparing
Calculating
Interpreting data
D. Values Integration
Honesty and accuracy in recording data
III. Learning tasks
A. ENGAGEMENT:
Form 2 groups of boys versus girls. Play the tag of war game. Form 2 lines. Wind
your arms around the waist of a group member in front of you. The boy and the girl in
the front line will pull each other hands, see whose group is the toughest.
After the game the teacher will inspect which group has the higher number of
members and whose group has won.
Relate the activity to the strength of an electromagnet later.
Review:
Inspect the three illustrations. Which picture show correct connection of an
electromagnet? Why?
1.
2.
3.
Answer the following questions with true or false
_____1. Carefulness and accurateness in connecting the materials is very
important factor in having a good electromagnet.
_____2. Any metallic material can be used as part of a electromagnet.
_____3. It is better to use big batteries for big nails.
_____4. Wire must be winded tightly on nails so that current will flow on nails.
_____5. Wires must be thin.
EXPLORATION
1. Divide the class into 4 groups
2. Distribute LM copies of the activity
3. Give instructions/guide in doing the activity
4. Let the pupils do activity 6 electromagnets of LM
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EXPLANATION:
Background information
Do you know that without the electromagnet many modern appliances that we now use could
not work? The electromagnet is a basic part of many electrical devices and appliances.
Knowing about the properties of electromagnets is a crucial underpinning for understanding
how magnetic fields are generated in nature, in the surface of the Sun, and in the interior of
Earth.
Electromagnets are widely used as components of other electrical devices, such
Day 7
as motors, generators, relays, loudspeakers, hard disks,MRI machines, scientific instruments,
and magnetic separation equipment. Electromagnets are also employed in industry for picking
up and moving heavy iron objects such as scrap iron and steel.
EXPLORATION
1. Divide the class into 4 groups
2. Distribute LM copies of the activity
3. Give instructions/guide in doing the activity
4. Let the pupils do activity 7- electromagnets of LM
EXPLANATION
Background information
Do you know that without the electromagnet many modern appliances that we now use could
not work? The electromagnet is a basic part of many electrical devices and
appliances.Knowing about the properties of electromagnets is a crucial underpinning for
understanding how magnetic fields are generated in nature, in the surface of the Sun, and in
the interior of Earth.
Electromagnets are widely used as components of other electrical devices, such
as motors, generators, relays, loudspeakers, hard disks,MRI machines, scientific instruments,
Day 8 separation equipment. Electromagnets are also employed in industry for picking
and magnetic
up and moving heavy iron objects such as scrap iron and steel.
dA
Day 8
Exploration
1. Divide the class into 4 groups
2. Distribute LM copies of the activity
3. Give instructions/guide in doing the activity
4. Let the pupils do activity 8 electromagnets of LM
Background information
Do you know that without the electromagnet many modern appliances that we now use could not
work? The electromagnet is a basic part of many electrical devices and appliances.Knowing about
the properties of electromagnets is a crucial underpinning for understanding how magnetic fields are
generated in nature, in the surface of the Sun, and in the interior of Earth.
Electromagnets are widely used as components of other electrical devices, such
as motors, generators, relays, loudspeakers, hard disks,MRI machines, scientific instruments,
and magnetic separation equipment. Electromagnets are also employed in industry for picking up
and moving heavy iron objects such as scrap iron and steel.
Day 9
EXPLORATION:
1.
Divide the class into 4 groups
2.
Distribute LM copies of the activity
3.
Give instructions/guide in doing the activity
4.
Let the pupils do activity 9 electromagnets of LM
EXPLANATION
Background information
Do you know that without the electromagnet many modern appliances that we now use could not
work? The electromagnet is a basic part of many electrical devices and appliances.Knowing
about the properties of electromagnets is a crucial underpinning for understanding how magnetic
fields are generated in nature, in the surface of the Sun, and in the interior of Earth.
Electromagnets are widely used as components of other electrical devices, such
as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments,
and magnetic separation equipment. Electromagnets are also employed in industry for picking up
and moving heavy iron objects such as scrap iron and steel.
dA
Day 10
ELABORATION/EXTENSION:
Let’s make a graph!
Directions:
Show the average number of paper clips each electromagnet picked up for each
voltage tested. Use the averages you calculated on the Electromagnets Data Chart
to make a line graph for each of the two electromagnets.
EVALUATION:
Answer the following True or False questions about magnets and electromagnets:
TRUE OR FALSE
Write true for correct statements and false for wrong statements
1. A strong electromagnet can be produced by making electricity flow through a coil
of wire wound around an iron metal.
2. An electromagnet behaves like a magnet.
3. Different volt of electricity produces the same strength of electromagnet.
4. The higher the volt of battery used. The stronger an electromagnet becomes.
5. An electromagnet is a permanent magnet.
ASSIGNMENT :
Writing About Magnetism
Write about having a magnetic touch. Think about what
magnets. As you are thinking, remember the
wish for everything he
imagination
you
know
about
story of King Midas (a king whose
touched to become gold was granted). Use your
and decide the following:
1. What objects you would want to be attracted to you.
2. What would the objects be made of?
3. Would you be able to use the magnetic touch to solve problems?