WEEK 4 Day 1
Materials which are Good Conductors of Heat and Electricity
Based from Science exemplar
by Science Writing Team of Batangas Provice
PPt created by : Precy R. Umali
JZMES
Review
Establishing a purpose for the lesson
You have learned from our previous lesson that there some materials that can transfer or conduct heat and electricity to another material. Different materials differ in the way they conduct heat. Do you know of materials that are good conductors of heat and electricity?. Lets find out, but before that, do this activity first.
Presenting examples/ instances of the lesson
Problem: What are the materials that are good conductors of heat and electricity?
Materials: ceramic mug with hot tap water, metal spoon, plastic spoon , paper clip, barbeque stick, wooden ladle, aluminum foil
(Teacher may add other materials to be used in the activity)
Procedure:
1. Arrange the container in one place.
2. Half fill the ceramic mug with hot tap water. Be careful in handling hot objects.
3. Dip the metal spoon, then touch the handle. What do you feel?
4. Do the same with other materials.
5. What materials conduct heat? Which do not?
7. .Record your observation on the data below
Presenting examples/ instances of the lesson
Guide Questions:
1. Based from the activity, do all materials conduct heat?
2. How do you call materials/ objects that conduct heat?
3. Can materials that conduct heat also be a good conductor
of electricity? Why?
X. Conclusion:
___________________________________________________________
Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Sharing of results
Discussing new concepts and practicing new skills #1
Watch video about Conductors and Insulators
https://www.youtube.com/watch?v=QFx6GIpsZNI
Not all materials conduct heat and electricity, but if they can what do we call these materials?
Give other examples of good conductors of heat and electricity not mentioned or used in the activity.
What about materials that do not conduct or transfer heat and electricity, what do we call them? ( insulators )
Developing mastery
Complete the concept map/web by writing an example of conductor in the circle.
conductor
Finding practical applications of concepts and skills in daily living
Your younger brother and sister are playing near the electric socket. They have lots of toys that made up of metal and iron. You knew that these are good conductors of electricity. What should you do to avoid accident that involve electric shock?
Making generalizations and abstractions about the lesson
What materials conduct heat and electricity?
What is conductor?
Insulator?
conduction- a process where heat can be transferred fro one object to another ,or from one molecule t another.
Making generalizations and abstractions about the lesson
conductors are materials that transmit heat and electricity
Ex. Metal, iron, copper, gold and silver
insulators are materials that do not transmit heat and electricity.
Evaluation
Identify the materials and write if it is conductor or insulator .
_______1. copper wire
_______2. plastic
_______3. iron
_______4. glass
_______5. aluminum
WEEK 4 Day 2
Characteristics of Good conductors of Heat and Electricity
Based from Science exemplar
by Science Writing Team of Batangas Provice
PPt created by : Precy R. Umali
JZMES
Review
Identify the materials which are good conductors of heat and electricity. Write them in their proper column.
Establishing a purpose for the lesson
What is this toy made up of?
Suppose you connect some parts of this toy in a electric socket, what would happen?
What makes this object a conductor of electricity and even heat?
Presenting examples/ instances of the lesson
Collaborative
Strategy: Jigsaw Approach
Activity : TDAR
Group Activity: “What Made Me?”
Problem: What are the characteristics of good conductors?
Materials: pictures of metal chains, iron rod, carpet, steel gate activity sheet
Procedures:
1. Look close at the picture of some materials.
2. Identify each one of them.
3. What materials are they made of?
4. Enumerate the characteristics of good conductors by answering the following questions.
Presenting examples/ instances of the lesson
A
B
C
D
Data and Observation
Questions:
1. What is the object in picture A made of?
2. What is the object in picture B. made of?
3. What is the object in picture C made of?
4. What is the object in picture D made of?
5. To what phase of matter do the objects belong?
6. How do the objects differ?
7. Which objects have similar characteristic?
8.What are the characteristics of matter in each object?
Write the corresponding letter of the picture on the property that describes the object.
_______a. hard and can be drawn into fine wires
_______b. hard and can be hammered into a flat thin sheet
_______c. can be heated without burning
_______d. can develop rust after exposure to rain
_______e. can burn and produce heat
9. Which objects can allow heat and electricity to flow without burning? __________________
10. What are the characteristics of materials that conduct
heat and electricity?
XV. Conclusion:
___________________________________
Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Sharing of results
Discussing new concepts and practicing new skills #2
What common properties of chain metal, iron rod and steel gate a good conductor of heat and electricity?
Developing mastery (Leads to formative assessment
Watch video about conductors and insulators
https://www.youtube.com/watch?v=QFx6GIpsZNI
What characteristic of some materials make them good conductor of
heat and electricity?
Finding practical applications of concepts and skills in daily living
To choose the best materials for use in electrical applications, some engineers specialize in understanding the conducting and insulating characteristics of materials. To carry electricity through building, electrical engineers use copper wire. Why?
Making generalizations and abstractions about the lesson
Heat and electricity are forms of energy that flow from molecules to molecules in materials. Some materials have the ability to allow heat and electricity to flow through them because they possess the property of thermal conductivity. Most materials that possess these characteristics are made up of metals.
Making generalizations and abstractions about the lesson
Metals are solid with compact molecules that are hard, ductile and malleable. They can react with other substances and form new materials.
Not only metals are good conductors of electricity. Many liquids that contain ions are good conductors.
Evaluating learning
Write the characteristics of materials that make them good conductors of heat and electricity
Additional activities for application or remediation
Compile a list of conductor materials found in school. Opposite each material, write the characteristics that make them good conductors of heat and electricity.
WEEK 4 Day 3
Why are Some Materials Good Conductors of Heat and Electricity
Based from Science exemplar
by Science Writing Team of Batangas Provice
PPt created by : Precy R. Umali
JZMES
Review
Let the pupils enumerate the characteristics of materials of good conductor of heat and electricity by completing the organizer below.
Establishing a purpose for the lesson
We have learned that some materials have characteristics that make them good conductors of heat and electricity. Let us now discuss the reason why by performing the activity.
Presenting examples/ instances of the lesson
Brainstorming
In a small group
In a small group , let the pupils engage in an open discussion. Remind them that no idea is “silly”. All ideas should be respectfully heard.
Establishing a purpose for the lesson
1. How are these materials alike?
2. Why are metals good conductors of heat and electricity
Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Discussing new concepts and practicing new skills #2
A video presentation
https://www.youtube.com/watch?v=QFx6GIpsZNI
1. Answer these questions:
What makes metal a good conductor of heat and electricity?
Developing mastery (Leads to formative assessment)
Learn more about the characteristics of good conductor of electricity by arranging the scrambled letters in each sentence
2. Electrons flow easily through (DUCTORSCON)
3. Commonly used metal in electrical wires because of its high conductivity (REPCOP)
4.-5 Our body is also a good conductor of electricity because of the presence of ( WTERA and LARENIM ).
Finding practical applications of concepts and skills in daily living
Why are most of the cooking utensils made of metals?
Why should you not use an iron rod to push a live wire?
Making generalizations and abstractions about the lesson Now I learned that
_________________________________________
_________________________________________
Background
It is difficult to observe directly how heat and electricity move through materials because they move through tiny particles of matter called molecules. The molecules are made up of tiniest particles of matter called atoms..
Metals are made up of atoms with free moving electrons. Electrons are the negatively charged particles of atoms that can combine with other electrons. The electrons are loosely arranged, that they can collide and move
freely back and forth conducting heat and electricity.
Copper is a metal that is commonly used in electrical wires because of its high conductivity. It is the most common electrical wire that can easily be connected by soldering and clamping. Your body and other non- metallic materials can be conductors of electricity because of the presence of water and minerals.
Evaluation
Write TRUE is the statement discus the characteristics of good conductor and FALSE if not.
__1. All solid materials can transfer heat and electricity easily.
__2. Metals are good conductors of electricity
__3. Ductile materials like aluminum and gold are conductors of heat
and electricity.
___4. Liquid with ions allow heat and electricity to transfer to other
materials.
___5. Copper is good conductor of electricity because of its high thermal conductivity.
Additional activities for application or remediation
Explain briefly.
1.Why cooking pots and baking ovens are made of metals ?
2.Why non-metallic materials like silicon and water are also
conductors of electricity?
WEEK 3 Day 4
Illustrating some materials are Good
Conductors of Heat and Electricity
PPt created by : Precy R. Umali
JZMES
Review
Get one strip of paper from the box. Tell whether the object written is a conductor of an insulator.
2. Rubber 10.plastic spoon
3. coins
4 paper platen
5. golden fork
6. spoon made of metal
7. wooden ladle
8. pencil eraser
Establishing a purpose for the lesson
We have learned already that there are materials that allow heat and electricity be transferred to other materials.
Can you illustrate now these materials?
Presenting examples/ instances of the lesson
Setting the Standards for doing the activity
b. Preparation of Materials
c. Activity Proper
Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Sharing of results
Discussing new concepts and practicing new skills #2
1. What can you say about the activity?
2. Did you follow the instruction given to you in doing the activity?
3. What lesson did you learn from the activity?
Developing mastery (Leads to formative assessment)
WEEK 4 Day 5
PPt created by : Precy R. Umali
JZMES
Review
Look at the different materials and appliances found inside the classroom.
Which among these are conductors of heat and electricity?
(Let the pupils point the conductor on the part in the appliance/s)
Establishing a purpose for the lesson
What do you think would happen to the materials around us if there will be no conductors or insulators?.
Presenting examples/ instances of the lesson
Group Activity “My Importance”
Problem: Why are good conductors of heat and electricity important?
Materials: pictures of different materials, activity sheets
Procedure:
1. Look at the pictures of different conductors of heat and electricity.
1. Look at the pictures of different conductors of heat and
electricity.
Look at the pictures of different conductors of heat and electricity.
Write the importance of these materials as a good
conductor of heat and electricity?
Discussing new concepts and practicing new skills #2
1.What materials are useful in conducting heat and electricity?
2.In what way are conductors of heat and electricity important?
Evaluating Learning
Read each question carefully. Write the letter of the correct answer on the blank before each number.
______1. Which among the following materials is useful in cooking food?.
A. metal spoon
B. plastic cup
C. aluminum casserole
D. ceramic mug
___ 2. Why is electrical wiring usually made from copper?
A. Because copper is shiny.
B. Because copper conducts electricity.
C. Because copper is not magnetic.
D. Because copper is strong.
___3. Why is electrical wiring usually covered with a layer of plastic?
A. To make it look pretty
B. To help electricity flow along the wire
C. To make it safe
D. To make it strong
___4. The following materials use conductor of heat and
electricity to function EXCEPT one. Which is it?
B. lighted electric bulb
C. water heater
D. washing machine.
___5. The main reason of using aluminum in cooking pans is
because
A. It is a good conductor of heat.
B. It is a good conductor of electricity.
C. It has a very high density.
D. It is strong.