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Thursday, September 15, 2011

Lesson Plan in Science VI


Philippine Normal University
 The National Center for Teacher Education
Lopez, Quezon

Detailed Lesson Plan in Science VI
(Process Approach)

I.              Objectives
At the end of the lesson, the pupils are expected to:
1.    Explain how energy is transferred from one body to another.
2.    Analyze the methods of energy transfer that occurred on given situations.
3.    Work with the group cooperatively.


II.            Subject Matter
a.    Topic: Energy Transfer
b.    Science Concept: Energy is transferred through heat. There are three ways in which heat is transferred namely; conduction, convention, & radiation.
c.    Science Processes: observing, communicating, inferring
d.    Materials: beaker, tripod, wire gauze, alcohol lamp, spoon, sawdust
Value: Cooperation



III.           Procedure
Teacher’s Activity                                                     Pupils’ Activity
A.   Preliminary Activities
1.    Prayer/Greetings
Please stand for our opening prayer.

Good morning, class!

2.    Science News
Let us update ourselves with the latest information in the world of science through our science reporter for today.

Very well said!

3.    Review/Checking of Assignment
Let us recall our past lesson. Somebody to give a sentence that summarizes our lesson yesterday. Yes, ______.

Exactly! What are these forms of energy? Will give one, _____?





Very good! Please exchange your notebooks with your seatmate.
As part of your assignment, will you give examples for each form?

4.    Vocabulary Development
On the board are words with missing letters. I want you to fill in the blanks with the missing letters to form the word. The meaning of the words will aid you in answering. Do you have questions?

Let’s proceed.
_ r _ _ s _ _ _ - movement from one
       place to another
w _ _ e _ - an energy-bearing disturbances in a medium
co _ d _ c_ _ _n – movement through
       substances by direct contact
_ o_v_ _t _ _n – movement in liquid
r_ _ia_ _ _ _ – movement in waves
      through space

Very well!

5.    Motivation
Who among you have seen their mother cooking in the kitchen?

Is there a time that your mother forgot a metal utensil on the frying pan while cooking?

What did you notice?

B.Lesson Proper
1.    Guided Inquiry
a.    Showing of Materials
Take a look at my table, class. What can you see?

That’s right! Can you still identify these materials one by one? Starting from my right. (The teacher will present the materials one by one.)





That’s good!

b.    Raising of the Problems
Class, I want you to look with the situation that I gave you, what do you want to learn this morning about these materials?


That’s a very nice question!

2.    Guided Exploration
a.    Group Orientation
For us to find the answer, we shall have an experiment. And if we have activities like experiments, what are the standards we should observe?





What do you think is the beauty if the group works cooperatively?

Very good! Listen now for the instructions:
ü  You will be divided into three groups. Each group shall receive an envelope containing the writing materials and the activity cards.
ü  Assign a secretary and a leader among yourselves. The leader shall proceed here after my “go” signal to get your materials for each group.
ü  Execute the activity as instructed by the activity cards.
ü  After 20 minutes, all groups must be done with their activity and shall post their observations on the board for our group reporting.
ü  I would like to remind the groups to use the cloth pad when handling hot objects and put the hot containers on padded surface.

Do you have questions or clarifications regarding or activity?

b.    Group Work
If that’s the case, let’s proceed.
Leaders, you may now get your materials.

Activity Card
Materials: beaker, tripod, wire gauze, alcohol lamp, spoon, sawdust

A.    1. Put a spoon in a beaker with hot water.
2. Touch the handle of the spoon after a few minutes
3. Describe what you feel and write your observations.

B.    1. Do the set up shown in Figure 1.1
2. Fill the beaker with 100 mL. of tap water.
3. Put a little amount of sawdust when the water
            reached the boiling point.
4. Observe the movement of the sawdust in boiling
            water.
5. Describe the movement and direction of the sawdust.
            - How does it move?
            - Why does it move in a particular way?

C.   1. Bring your hands near the lighted alcohol lamp.
Be careful not to touch the heat source.
2. Describe what you feel and write your observations.























Your time is up, class. Please keep the materials that you used and be ready for the group reporting.

c.    Group Reporting
Starting with Group 1, please tell the rest of the class about your observations. (Group 2-3 shall follow)
























Excellent observation, class!

3.    Guided Discovery
a.    Discussion and Analysis
Now, I want you to look at the three set up and look for the similarities among them.



Exactly! How about the ways how the heat was transferred. What are the media wherein the heat was transferred from one body to another?


Correct! How about in set up B?
Yes, _______.

Very good! Lastly, what medium do we have in set up C?


Exactly! Now, let’s classify them. What form of matter is the spoon?
water? space around the flame?



Precisely correct!

b.    Abstraction
With reference to the medium through which the heat was transferred, how can energy be transferred from one body to another?




Intelligent answer! Kindly repeat his/her answer.

If we talk about the transfer of energy through a substance/solid by direct contact, we call this method as ________.

Very good! If it refers to the transfer of energy by the movement of liquid, it is said to be __________.

Awesome! How about the last one? If energy transfers in waves through space, it is what we call ________.

Brilliant! Classifying these three, what do we have now?

Very well!

c.    Generalization
How do we define conduction?




What about convection?



What can you say about radiation?


Very well! How do we call these three concepts on the board?


Exceptionally brilliant!
Please write these

4.    Application
I prepared a game for you to strengthen your understanding on our lesson this morning. This game is entitled, “Heat me up!”

I will give each of you three flaglets of different colors; red, blue, & yellow.

I will read different occurrences of energy. After reading, I will give you five seconds to think and analyze what method of energy transfer occurred in the situation.

After five seconds, I will say “Heat me up!” them you’ll show your answers by raising;
·         red flaglet for conduction
·         blue flaglet for convection
·         yellow flaglet for radiation
Your first answer should be your final answer because you are not allowed to switch/change your answer.

Did I make myself clear, class?

Alright. Let’s start.


Amen.

Good morning, Sir!
Good morning, classmates!


(The reporter shall proceed.)






Energy is taken from different sources and has different forms.

Chemical energy
Mechanical energy
Sound energy
Electrical energy
Radiant energy
Nuclear energy



(The pupils will give their examples.)






None/ Yes, Sir.




















Yes/None, Sir.

Sir, the metal utensil feels hot to when I touched it.




Sir, there are scientific apparatus and some materials on the table.


Beaker
Tripod
Wire gauze
Alcohol lamp
Spoon
Sawdust






Why the metal utensil does feel hot when somebody forgot it unattended on a frying pan while cooking?






Follow the instructions
Refrain from unnecessary talking.
Observe the precautionary measures.
Work cooperatively.

The work gets done easier and in less time.
























None/Yes, Sir.






























A.   When we touched the spoon on the hot water, we observe that the spoon gets hot after a few minutes. The heat from the hot water caused by the particles of the spoon to move faster. The energy of the hot water particles are transferred to the spoon.
B.   When the water is boiling, the sawdust moves in a circular clockwise direction. The liquid closest to the bottom is warmed by heat conducted through the bottom of the beaker. It expands and its density decreases. The hot water as a result rises to the top and the same cooler fluid decreases towards the bottom, thus setting up a circular motion.
C.   We feel warm/hot in our hands when we brought our hands near the fir coming from the alcohol lamp.





Sir. I have observed that the heat flows from a hot body to a cool body. Heat is transferred from one body to another.


In set up A, heat was transferred through the spoon.
Sir, heat transfers and flows on the water itself.


Heat was transferred through the space around the flame.


Spoon is a solid.
Water is a liquid.
The space around the flame contains gas.






Energy can be transferred through solid by direct contact, by movement in liquid, and in waves through space.

(The pupil repeats the answer.)



Sir, that method is called conduction.


It is said to be convection, Sir.


Sir, that method is called radiation.

These are the three methods of energy transfer.



Conduction is the transfer of energy through a substance/solid by direct contact.

Convection refers to the transfer of energy by the movement of liquid.

Radiation is the transfer of energy in waves through space.

These are the three methods of energy transfer.




























Yes/No, Sir!


1.    After cutting a wood, the blade of a carpenter’s saw feels hot.
2.    A runner perspired after a 2-hour jog due to the sun’s heat.
3.    Katherine touched the top part of the television set and finds it hot after watching her favorite show for an hour or two.
4.    Ariel boiled macaroni pasta in a boiler with 3-4 cups of water. He observed the circular movement of the pasta and the water vapor the come out of the boiler.
5.    Jeffrey finds it hot to sit beside a bonfire during our camp fire activities.












5. Evaluation
A. Name the method of energy transfer in the following situation.

_____________1.Electrical energy that flows through a light bulb is changed to light
 and heat.
_____________2. When I place my hand over a glowing charcoal, it feels hot.
_____________3. The lighted bulb of a table lamp beside me makes me feel hot.
­­­­­­­­­­­_____________4. I have observed that the ocean current has a circulating
 movement.
_____________5. The flat iron can transfer its heat to the clothes being pressed.

B. From the groups, each member will evaluate their group mates’ participation during the activity using a checklist.
















IV.          Assignment

Observe at home. List down at least five (5) examples of energy transfer and identify the method of energy transfer.

Prepared by:

Joe Anthony L. Basco
BEEd IV - A


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