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THE LEPRECHAUNS
MS. JANALIN FAE TATIL-ROMBLONTEACHER 1
PASAY CITY WEST HIGH SCHOOL
2012
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Bingo! There you are! I am glad I
found you! I heard you are the best
treasure hunter in this town.
Whew!! Can you help me find my
pot of gold?
Hi! I am Helena. Dont worry, I know
where to find but you have to work on
something so that I will give you clues
where to find it.
How to find the Leprechauns Gold?
1. Helena will help you find the gold by giving youclues on where it is located.
2.All you have to do is follow Helenas task for you.
3. In each task you finish will earn you clues.
4. At the end of all tasks you and I are going find thepot of gold and I will reward you with of mytreasure.
5. You should do the task alone.
6. If you wish to ask for help you can do so butHelena will collect 20 gold coins from yourreward. But you only have 2 chances to get help.
7. Is that a deal?
Take our
deal?
Yes! I will
do it!
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Great! You have taken our deal. Now, before
we start the treasure hunt you should
remember the important ideas below.
Work is the product of force andthe displacement.
Work is done when the following is
present:
1. Force exerted
2. Displacement caused by the
force
3. The same direction of the forceand the displacement
The formula for work is W = Fd
where:
W is the work done
F is the force exerted
D is the displacement
The unit of work is Joules. 1 Joule = 1
Nm
So let us
begin! Ready?
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TASK #1
TASK 6TASK 5TASK 4
TASK 3TASK 2TASK 1
I did not understand
Clues
This is your first task. You have to analyze the picture I have for you below. You
have to identify whether THERE is WORK done or there is NO WORK done. If
you are able to answer 8 CORRECT items then I will give you your first clue to
locate the Leprechauns gold. To check your answers go to ANSWER SHEET #1.
If YOU failed to get 8 correct answers you have to do the task again but you
lose 5 gold coins for the second try. Please answer honestly.
If you need help just put an X mark on the first help button. Remember you have
only two chances to get help.
Pushing a cabinet
along the floor
Answer: ___________
Skating on the floor
Answer: ___________
Sitting
Answer: _______
Carrying a box
Answer: _______
Kicking a ball
Answer: _______
Lifting a block of
wood
Answer: _______
Pushing a cart
Answer: _______Sliding
Answer: _______
Climbing a stair
Answer: _______
Playing on a seesaw
Answer: _______
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Are you ready to do the next task? Do you have
anything that you dont understand? If there is,
then go to the REFERENCE CARD and see if it can
help you. Remember you still have 5 tasks to finish.
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TASK #2
TASK 6TASK 5TASK 4
TASK 3TASK 2TASK 1
I did not understand
Clues
This is your second task. You have to read and analyze the problems below. You
have to answer them correctly before I will give you your second clue to locate
the Leprechauns gold. To check your answers go to ANSWER SHEET #2. If YOU
failed to get the correct answer you have to do the task again but you lose 5
gold coins for the second try. Please answer honestly.
You know what to do with the help
buttons. I need gold..
Problem 1:How much work is done when aforce of 500 N is used to slide aheavy cabinet 1 meter across the
floor?
Problem 2:How much work is done in lifting a 2 kg boxto a height of 1.5 m high?
FORMULA:
SOLUTION:
FINAL ANSWER:
GIVEN:GIVEN: FORMULA:
SOLUTION:
FINAL ANSWER:
Dont listen to Helena kidShe
just wants your gold.. YOU CAN
DO IT!!
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On your third task!
You are great kid! I believe in you. You can do it.
Do you have anything that you dont understand?
If there is, then go to the REFERENCE CARD and see
if it can help you. Remember you still have 4 tasks
to finish.
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TASK #3
ACTIVITY WORK DONE?
A teacher applies a force to a walland becomes exhausted. YES or NO
A weightlifter lifts a barbell aboveher head. YES or NO
A waiter carries a tray full of mealsacross a dining room at a constantspeed.
YES or NO
A rolling marble hits a note cardand moves it across a table. YES or NO
A shot-putter launches the shot.YES or NO
TASK 6TASK 5TASK 4
TASK 3TASK 2TASK 1
I did not understand
Clues
This is your third task. You identify whether there is work done or none.
Encircle you choice. You have to answer 4 out of 5 items correctly before I will
give you your third clue to locate the Leprechauns gold. To check your answers
go to ANSWER SHEET #3. If YOU failed to get the correct answer you have to do
the task again but you lose 5 gold coins for the second try. Please answer
honestl .
You know what to do with the help
buttons. I need gold..I heard from Helena that you are doing
very well. Let me see if you can answer
this. By the way I am Anna, Helenas
best friend..
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YES!!! 3
more to go!!
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TASK #4
TASK 6TASK 5TASK 4
TASK 3TASK 2TASK 1
I did not understand
Clues
This is your fourth task. You have to determine whether the work done is
positive or negative. Just write + or respectively. You have to get 4 out of 5
questions correctly before I will give you your fourth clue to locate the
Leprechauns gold. To check your answers go to ANSWER SHEET #4. If YOU
failed to get the correct answer you have to do the task again but you lose 5
You know what to do with the helpbuttons. I need gold..
Directions:
Indicate whether there ispositive (+) or negative (-)
work being done on theobject.
_____ 1. An eastward-moving carskids to a stopacross dry pavement.
_____ 2. A freshmanstands on his toes and lifts
a World Civilization bookto the top shelf of hislocker.
_____ 3. At Great America, aroller coaster caris lifted tothe peak of the first hill on theShock Wave.
_____ 4. A catcher puts out hismitt and catches the baseball.
_____ 5. A falling parachutistopens the chute and slowsdown.
WOW!! Helena is right! You
are an intelligent kid.
Hmmm see if you can get
this right.
My kid is undefeated GOKid!!!
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YOU ARE#1 KID!!
I am Primie afriend of
Leprechauns.
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TASK #5
TASK 6TASK 5TASK 4
TASK 3TASK 2TASK 1
I did not understand
Clues
This is your fifth task. You have to read and analyze the problem below. You
have to answer it correctly before I will give you your fifth clue to locate the
Leprechauns gold. To check your answers go to ANSWER SHEET #5. If YOU
failed to get the correct answer you have to do the task again but you lose 5
gold coins for the second try. Please answer honestly.
You know what to do
with the help buttons. I
need gold..
Problem:A 2-kg object is slidingat constant speedacross a frictionlesssurface for adisplacement of 5.0 m to
the right. What is thework done?
GIVEN: FORMULA:
SOLUTION:
FINAL ANSWER:
A leprechaun is a type offairy in Irish folklore, usually taking
the form of an old man, clad in a red or green coat, who
enjoys partaking in mischief. The leprechauns spend all their
time busily making shoes, and store away all their coins in a
hidden pot of gold at the end of the rainbow.
GO! GO!
GO! Kid!
http://en.wikipedia.org/wiki/Fairyhttp://en.wikipedia.org/wiki/Irish_mythologyhttp://en.wikipedia.org/wiki/Pot_of_goldhttp://en.wikipedia.org/wiki/Rainbowhttp://en.wikipedia.org/wiki/Rainbowhttp://en.wikipedia.org/wiki/Pot_of_goldhttp://en.wikipedia.org/wiki/Irish_mythologyhttp://en.wikipedia.org/wiki/Fairy7/21/2019 SIM on work
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Hey Helena! That kid seems
to be very good! So how
much gold do you have now?
I am not worried. I
have a few golds..
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TASK #6
cTASK 6TASK 5TASK 4
TASK 3TASK 2TASK 1
I did not understand
Clues
This is your last task. You have to read and analyze the question below. You
have to answer it correctly before I will give you your last clue to locate the
Leprechauns gold. To check your answers go to ANSWER SHEET #6. If YOU
failed to get the correct answer you have to do the task again but you lose 5
gold coins for the second try. Please answer honestly.
You know what to do with the helpbuttons. I need gold..
Question:When a force isapplied to do work onan object, does the
object alwaysaccelerate?
Answer:___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
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THANK YOU KID! AT LAST I
FOUND IT. I KEPT MY GOLD AT
THE RAINBOWS END.
NOW HERE IS YOUR REWARD!!
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Here is your guide to the answers of the task given
to you.ANSWER CARD #1
Pushing a cabinet
along the floor
Answer:
WORK
Skating on the floor
Answer: WORK
Sitting
Answer: NO
WORK
Carrying a box
Answer: NO
WORK
Kicking a ball
Answer:
WORK
Lifting a block of
wood
Answer:
WORK
Pushing a cart
Answer: WORKSliding
Answer: NOWORKClimbing a stair
Answer: WORK
Playing on a seesaw
Answer: NOWORK
Clue: IT HAS MANY COLORS.
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ANSWER CARD #2
Clue: IT ALWAYS COMES AFTER THE RAIN.
Here is your guide to the answers of the task given
to you.
Problem 1:
How much work is done when aforce of 500 N is used to slide aheavy cabinet 1 meter across the
floor?
Problem 2:
How much work is done in lifting a 2 kg boxto a height of 1.5 m high?
FORMULA:
SOLUTION:
FINAL ANSWER:
GIVEN:GIVEN: FORMULA:
SOLUTION:
FINAL ANSWER:
F = 500D = 1m W = Fd
W = 500 N x 1m
W = 500 N-m or 500joules
500 joules
m = 2 kgd = 1.5 m
W = FdW = Fd = mgd
W = 2 kg x 9.8 m/s2 x 1.5 mW = 19.6 kg m/s2 x 1.5 m = 29.40 kg m/s2 . m
W = 29.40 N-m or 29.40 joules
29.40 joules
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ACTIVITY WORK DONE?
A teacher applies a force to a wall and becomesexhausted. YES or NO
A weightlifter lifts a barbell above her head.YES or NO
A waiter carries a tray full of meals across a diningroom at a constant speed. YES or NO
A rolling marble hits a note card and moves it acrossa table. YES or NO
A shot-putter launches the shot.YES or NO
ANSWER CARD #3
Clue: RAINDROPS CAUSE IT.
Here is your guide to the answers of the task given
to you.
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ANSWER CARD #4
Clue: LEGEND SAYS IT IS A BRIDGE BETWEEN HEAVEN AND EARTH.
Here is your guide to the answers of the task given
to you.
Directions:
Indicate whether there is positive(+) or negative (-) work beingdone on the object.
(+) 1. An eastward-moving car
skids to a stop across drypavement.
(+) 2. A freshman stands on histoes and lifts a World Civilizationbook to the top shelf of hislocker.
(+) 3. At Great America, a rollercoaster caris lifted to the peak ofthe first hill on the Shock Wave.
(-) 4. A catcher puts out his mittand catches the baseball.
(-) 5. A falling parachutist opensthe chute and slows down.
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ANSWER CARD #5
Clue: PHYSICS SAYS THAT IT IS ALL BECAUSE OF LIGHT AND WATER.
Here is your guide to the answers of the task given
to you.
Problem:A 2-kg object is slidingat constant speedacross a frictionlesssurface for adisplacement of 5.0 m to
the right. What is thework done?
GIVEN: FORMULA:
SOLUTION:
FINAL ANSWER:
m = 2 kgd = 5 m
W = Fd =mgd
W = 2 kg x 9.8 m/s2 x 5 mW = 19.6 kg m/s2 x 5 m
= 98 kg m/s2 x m
W = 98 N-m or 98 joules
98 joules
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ANSWER CARD #6
Clue: IF YOU GO UNDER IT YOU WILL BE TRANSFORMED.
Here is your guide to the answers of the task given
to you.
Question:When a force isapplied to do work onan object, does theobject alwaysaccelerate?
Answer:YES. Because when a forceis applied on an object the
object will either gain or
change its velocity. The
change in velocity over a
period of time will bring
about acceleration.
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The direction of work done is
dependent on the direction of theforce acting on it. If the force is acting
on the north and east the work is
positive but when it acts on the south
and the west then the work is
negative.
Are you sure you will still make it?
When an object changes its velocity
as when it moves from rest or it went
faster or when it slowed down, in any
of these cases the object is said to be
accelerating
Work is equal to the product of force
and displacement.
Weight of an object is the force
exerted by an object.
Weight is equal to mass
times gravity
Gravity is = to 9.8 m/s2
To have work the force and displacement
must be in the same direction.
Work can be negative and positive
The unit of work is joules
When the force is directed at an angle then
the x-component of the force must be in
the direction of the displacement.
If force is acted oat an angle then
W=F x cos x d
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REFERENCES
http://ph.images.search.yahoo.com/http://ph.images.search.yahoo.com/http://ph.images.search.yahoo.com/http://www.physicsclassroom.com/Class/energy/u5l1a.htmlhttp://www.physicsclassroom.com/Class/energy/u5l1a.htmlhttp://www.physicsclassroom.com/Class/energy/u5l1a.htmlhttp://www.physicsclassroom.com/Class/energy/u5l1a.htmlhttp://faculty.ccc.edu/colleges/wright/science/physics221/P221Ws6.htmhttp://faculty.ccc.edu/colleges/wright/science/physics221/P221Ws6.htmhttp://faculty.ccc.edu/colleges/wright/science/physics221/P221Ws6.htmhttp://faculty.ccc.edu/colleges/wright/science/physics221/P221Ws6.htm7/21/2019 SIM on work
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Most often students perception of Physics as a subject is difficult. This stigma attached to Physics post a challenge on
both the teachers and the students as well. Teacher finds it very hard to break the walls of this perception and
infiltrate the idle minds of the students. The students as well is very much challenged in coping with the how tounderstand different Physics concepts. This interplay between students and teachers lead to rising of different
strategies and intervention to help strengthen this link. Fortunately the author is privileged to validate one of these
interventions the use of the Strategic Intervention Material.
This material is intended to help students with the topic on work. The skill sought to be enhanced by this Strategic
Intervention Material is the students analytical skills in understanding different concepts in Physics as well as the
problem solving skills which is most often used to further understand Physics concept. And these skills are found to be
least mastered by students even when dealing with other topic in Physics.
In this study students were given a pre-test on the topic of work. Pre-test mean score was taken. After which the
Strategic Intervention Material (SIM for brevity) was given to them for use and post-test was also administered andmean score was also taken. The Pre-test and Post-test means were compared and the results show comparable
differences which led the author to conclude that the SIM is effective in improving students performance.
There were 40 students who were randomly chosen as respondents for this study. These students belong to the lower
50% of the graduating class of Academic Year 2012-2013 base on the first quarter results of the periodic test.
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Table 1. The Pre-test and Post-test ScoresStudent Pre-test Score Post-test Score
1 6 10
2 3 11
3 5 8
4 6
5 8 7
6 5
7 6
8 7 11
9 6 10
10 4 8
11 5
12 6 11
13 7 1114 3 4
15 3 2
16 8
17 4
18 7
19 6
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Table 2. Scores of Students who took Both TestsStudent Pre-test Score Post-test Score
1 6 10
2 3 11
3 5 8
5 8 7
8 7 11
9 6 10
10 4 8
12 6 11
13 7 11
14 3 4
15 3 2
20 3 11
21 3 9
23 4 10
24 7 5
26 4 4
28 8 1131 6 14
32 6 8
33 5 9
34 7 9
36 5 7
37 6 8
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1.The data reveals that out of the 40 students only 26 students took the post-test
because of reasons beyond the control of the author.
2.That out of the 26 students who took the pre-test and post-test 21 of them has
increased their post-test scores. This is equivalent to 81% of the students whotook both exams.
3.The mean score in table reveals that there is a marked difference in the results
from the mean pre-test score of 5.269 to 8.577. This further reveals that the
scores increased from the pre-test to the post-test. This is attributable to the
used of the Strategic Intervention Material.
4.From Table 3 it reveals that regardless of the students gender, there is an
increase in the scores of students from the pre-test to the post-test. Further, the
mean scores of female students who took both exams are higher than that of the
male students with a mean of 7.714 and 7.250 respectively.
5.That the Strategic Intervention Material if used in a student learning situation can
improve the scores of students.
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The Strategic Intervention Material is effective in improving the scores of
students.
The author recommends that the SIM be used over a big sample of the
population of fourth year students taking the Physics subjects or even better ifadministered to the entire population.