SIM on work

7/21/2019 SIM on work

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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


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


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


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


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


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




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/Fairy


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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


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




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.


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.


to you.


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ANSWER CARD #4

Clue: LEGEND SAYS IT IS A BRIDGE BETWEEN HEAVEN AND EARTH.


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.


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.


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.htm


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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.

Documents

SIM on work