Teknik Presentation Sec B(Guru1)

8/13/2019 Teknik Presentation Sec B(Guru1)

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Daripada:- ikgu ZanizaH


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Kesilapan umum calon

UPSR :-

1.Tak guna maklumatyang diberi.

2.Tak boleh bezakan istilahKPS .

3.Jawapan umum , kabur dantidak berkaitan fakta atau

prinsip sains.

4.Tak jawab ikut kehendak utamasoalan .

5.Kesilapan ejaan atau tulisan

yang sukar dibaca .


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SKILL THAT WILBE TESTED

OBSERVATION

INFERENSCONSLUSION

RELATIONSHIP

AIM/PURPOSE

CONSTANT

VARIABLE

(CV)

HYPOTESIS

PREDICT

TREND

MANIPULATEDVARIABLE

(MV)

RESPONSIBLE

VARIABLE

(RV)


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OBSERVATION

What can you see , touch ,

smell, taste and feel

ANDDont state your reason

KeyWordLook the result , state,

compare


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Observation

State one observation based on the table above


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Percentage of housing area is ..

The diagram below shows the percentage of housing area and forest area

in a certain district

increase

Compared with forest area

State one observation based on the table below.

Year

Percentage of area (%)

Housing

Forest


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observation

State one observation from figure 1

[ l ist the dif ferent @ What to observed @

respond ing var iable ]

observation

Figure 1A

B

The number of leaves in plant A is morethan plant BObservation = what to observe


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Other Observation/

Another Logical Answer

1) Diameter of stem A is bigger than plant B.

2) Size of plant A is bigger than plant B.

3. The size of leaf of plant A is bigger than

plant B

A

BA


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observation

State one observationfor figure B

[ what is going on? @ Respond ing var iable ]

observation

The lizard cut of its tail

Figure B


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Make an observation

State one observationafter one week

[ What is the changes @ Respond ing var iable ]

[ What is the changes @ Respond ing var iables ]

i. Plant A : live

ii. Plant B : wilted and will die

Uncoated

leaves Coated withgrease

observation

Observation is Responding variablePlant A stay alive, plant B wilt and willdie


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Make an observation

Write one observationfor figure 2

[ What is the changes @ Respond ing var iable]

observation

Rubber tree abort its leaves in dry season

Figure 2

January Mac

( dry season)


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OBSERVATION

State one observation for figure 3

[ What is the changes @ Respond ing var iable ]

observation

The level of water is getting

higher


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Inference

Explanation based on your OBSERVATION

Give your reason

WHY( based on the result)

KeyWordState the result,WHYand

com are

What to changed + TREND


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Cara tulis jawapan Inferens

Cara 1 :- BECAUSEbecause


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Cara tulis jawapan Inferens :-

Cara 2 :-

OBSERVATIONBECAUSE

The lizard cut off itstail because its .

..


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Observation :A Bi) Boy A is fat than boy Bii) Boy B is thin than boy A

Inference :

ii) Because boy A get more food than

boy B

i) Because boy B did not get enough foodthan boys A

iii) Because boy A has followed his

fathers genetic than boy B


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A B

OBSERVATION INFERENCE

TREE B IS HIGHER

COMPARED WITH TREE A

Tree B gets enough fertilizercompared to tree A.

Tree B gets enough watercompared to tree A.

Tree B gets enough sunlightcompared to tree A.

Tree B has been planted earlierthan tree A.

Tree Bs genetic is better than treeAs enetic.


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OTHER OBSERVATION

Pemerhatian untuk menyokong setiap inferensyang dinyatakan. Ianya merupakan pemerhatian

yang boleh dibuat oleh semua jenis deria TETAPI

pemerhatian ini tidak boleh sama seperti

pemerhatian ASAL

B


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A

B

OBSERVATION

INFERENCES 2Plant B is higher thanPlant A

Plant B gets enough

sunlight compared plant A

INFERENCES 1

Plant B gets more fertilizer

compared to Plant A

Other Observationfor Inferences 1

Other Observation

for Inferences 2

The size of leaf of plant B is

bigger than size of leaf plant A

The leaf of plant B is more

green than the leaf of plant A


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PAK ABUS COW

FATTER/ 500 kg

PAK BUSUS COW

FAT/ 400 kg


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OBSERVATION

INFERENCES 2

Pak Abus cow is fatterthan Pak Busus cow

Pak Abus cow is goodgenetic than Pak Busus

cow

INFERENCES 1

Because Pak Abus cowgets enough food than Pak

Busus cow

Other

observations

Other

observation

The faeces of PakAbus cow is more

than Pak Busus

cow.

Pak Abus cow

produced more milkthan Pak Busus cow


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The distance travelled by vehicle X is shorter than vehicle Y

Because vehicle Y is modern than vehicle X


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3. Table 2 shows the result of a fair test about time taken for

water to dry in beaker S and beaker T.

i) The time taken for water to dry in beaker S is 2 hour

because the temperature surrounding is higher.

ii) The time taken for water to dry in beaker Q is 4

hour because the surface area of beaker Q is small.

i) The volume of water left in beaker S decreased

faster than the volume of water left in beaker T.


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There is no water left in the beaker after 5 hours.

Because all the water was absorved by process of

evaporation


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To make observation and inference

Write one and for figure7

inference

Because .

Why that phenemenon was happen ? ]

[ observat ion @ Respon ding v ariab le @ What is go ing on?]

Figure 7

observation

spring

Glass rod Iron rod

magnet

Spring with iron rod is elongated than glass rod

Iron rod is the magnetic material compared to glass rod

Observation : Spring with iron rod become longer than glass rod

Inference : Iron is magnetic material compared to glass rod


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Infering

State one inference for this investigation .

[ Find the changes @ responding var iable ]

[ f ind the changes @ respond ing var iable]

i. Seeds in beaker A : geminate

ii. Seeds ib beaker B : not geminate

In thescience

lab

In the

refrigator

seeds Wet cotton

Because : .The temperature is suitable

i) Seeds in beaker B : ..

ii) Because : ..

Not geminate

The temperature is not suitable / too cold

The temperature for seedling A is suitable comparedwith the temperature of seedling B


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Comparing observation and inference

Write one observation and inferens from thefigure above

inference

Because .

[ Why that phenomenon was happen? ]

Cotton can absorb water more than synthetic cloth

[ observat ion @ What do you can see ? @ Responding v ar iables]

Figure 4

The volume of water in beaker A isthe lowestcompared to beaker C

observation

cotton paper

Synthetic cloth

A B C

Water

The aim of the investigation is to know the abilitydifferent materials to absorb water

Observation : The volume of water in beaker A is the lower compared to

beaker B and C.

Inferences : The ability to absorb water is different /

Cotton can absorb water more than paper andsynthetic cloth


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1. Things that are kept the same / constant variable (cv)

2. Things that are changed / manipulated variable (mv)

3. Things that are measured/ observed / responding variable (cv)

IDENTIFIED VARIABLES


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VARIABLES

IN THE TABLES(2 COLUMN)


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1 A fair test was done to study the relationship between the number ofsponges used and the amount of water absorbed.

Number of

sponge

Volume of water

absorbed (ml)

1 30

2 63

96

4 129

MANIPULATED VARIABLES/change THE NUMBER OF SPONGE

RESPONDING VARIABLES/

Measured/ observedTHE VOLUME/AMOUNT OF WATER ABSORBED

THE SIZE OF SPONGECONSTANT VARIABLES

mv/change rv/measured/

observed


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Type of object Ability to see the book

Glass plate Clear

Tracing paper Blurred/ not clearCardboard Cannot be seen

MANIPULATED VARIABLES

RESPONDING VARIABLES

CONSTANT VARIABLES

THE TYPE OF OBJECT

THE ABILITY TO SEE THE BOOK

THE TYPE OF BOOK

2


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3


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The figure below shows four containers of the same size.

Each container is filled with hot water with a temperature of 92C.After 20 minutes, the temperature of all the containers is taken and

recorded as follows:

TemperatureContainer Temperature

J 83

K 88

L 75

M 61

MANIPULATED VARIABLES

RESPONDING VARIABLES

CONSTANT VARIABLES

Size of container

temperature

The material to cover each container


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4. Table below shows the lists the distance of Mercury, Mars, Saturnand Neptune from the Sun.

Planet Distance from the Sun(km)

Mercury 58 000 000

Mars 228 000 000

Saturn 1 435 000 000Neptune 4 500 000 000

MEASURED

KEPT THE SAME

CHANGE

THE GALAXY

THE DISTANCE FROM THE SUN

THE PLANET


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1. Four similar pieces of wet handkerchief, Q, R, S and T


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p , , ,

are hung under fans of different speedsrespectively.

Each handkerchief has a mass of 100g. After one hour

the mass of each handkerchief is recorded as shownin Table 3.

Handkechief Speed of fan Mass after 1 hourQ (0) : None 95

R (1) : Low 90

S (2) : Medium 80

T (3) : High 65

mv rv


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Handkechief Speed of fan Mass after 1 hour

Q (0) : None 95

R (1) : Low 90

S (2) : Medium 80

T (3) : High 65

OBSERVED

KEPT THE SAME

The mass after 1 hour

The speed of fanCHANGE

The mass of handkerchief

mv rv

1. Four similar pieces of wet handkerchief, Q, R, S and T


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p

are hung underfans ofdifferent speedsrespectively.

Each handkerchief has a mass of 100g.After one hour

the mass of each handkerchiefis recorded as shownin Table 3.

OBSERVED

KEPT THE SAME

The mass after 1 hour

The speed of fanCHANGE

The mass of each

handkerchief before

experiment


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State what :

What to change : The name

The time takenWhat to observed :

The aged of studentWhat to kept the same :

2 A group of pupils carries out an activity using


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2. A group of pupils carries out an activity using

model cars. The bar chart below shows the

information they have obtained. (upsr 2004)

State :

What to change : The number of batteries

The speedWhat to observed :

What to kept the same : The size of model cars


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VARIABLES

IN THE DIAGRAM /FIGURE/ PICTURE


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A B


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a) Kept the same : i) The number / size / type of mice

ii) The amount / presence of biscuit

iii) The size of container

b) change : i) The presence of air

c) observed : i) The condition of the mice after two days

iv) The duration of the experiment


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VARIABLES

IN THE STATEMENT


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2) The number of dry cellcan affect the

brightness of the bulbQuestion : Answer

a) Change : The number of dry cell

Measured : The brightness of the bulb

1) The rate of e aporation is controlled b


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1) The rate of evaporationis controlled by

the surface area of the water exposedto

the heat of the sun

Manipulated variable :

Responding variable :

The surface area of

the water exposed to

the heat of the sun

The rate of evaporation


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The food needed by an animal per day is

affected by its surrounding temperature

and its activity level

MV : Surrounding temperature

Activity levelRV : The food needed by an animal per

day


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The distance of a planet from the Sun will

affect the time taken by a planet to make

a complete revolution around the Sun

MV :

RV :

The distance of a planet from the

sun

The time taken by a planet to make

a complete revolution around theSun


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The position of the earthworm from the soil

surface is influenced by the temperature of

the soil surface

MV :

RV :

The temperature of the soil surface

The position of the earthworm from

the soil


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The time taken for the water to boil is related

the volume of water that is used

MV :

RV :

The volume of water that is used

The time taken for the water to boil


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The number of trees left can affect the

temperature of surrounding

MV :

RV :

The temperature of surrounding

The number of trees left


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INTERPRET DATA


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INTERPRET DATA

What is the trend in the number of pendulum swings asthe length increases?

Responding variable ]

[ trend / the changes of data ]

1. Thenumberofpendulumswings

2. decrease

The number of pendulum swings in

30 seconds

Length of the pendulum string (cm)

INTERPRET DATA


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INTERPRET DATA

State the trend of volume of water left when thewide of cotton cloth increase.

[ Responding variable ]

[ trend of the changes ]

1.Volume of water left

2. decrease

Wide of cotton

cloth ( cm )

Volume of water

left ( ml)

24 44

30 40

36 36

42 32

INTERPRET DATA


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INTERPRET DATA

What is the trend of flower when the mass of fertilizerincreases?

Responding variables]

[ trend / pattern of the changes ]

1. Quantity if flowers

2. Increase

VASE Mass of fertilizer (g) Quantity of flowers

P 0 10

Q 30 25

R 60 50

INTREPRET THE INFORMATION


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State the trend of green turtle which lays egg atRantau Abang whithin five years.

[ Responding variable ]

[ trend / the changes of data ]

1. Quantity of green turtle

2. Decrease,

Quantity of green turtle

1998 1999 2000 2001 2002 year2003

horizontal


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Number of sponge Volume of water


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p g

absorbed (ml)

4 129

96

2 63

1 30

Answer : Decrease

Planet Distance from the Sun (km)


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Planet Distance from the Sun (km)

Mercury 58 000 000

Mars 228 000 000

Saturn 1 435 000 000

Neptune 4 500 000 000

Answer : Increase


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Answer : Decrease, Increase, Decrease


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Answer : Increase


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Time (minutes) 0 5 10 15 20 25 30

Temperature (C) 100 85 70 55 40 27 27

Answer : Decrease, Horizontal


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To investigate the relationship between__________ with_________

To study the effect of _______ with / and

__________

Dont change the position of wtc and wto

We can change the position of wtc and wto

Si f d( ) h b f bl k


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Size of Bread(cm) The number of black spot onthe bread

25 5

36 17

49 29

1. Identified :

a) MV/Change : The size of Bread

b) RV/Observed : The number of black spot on

the bread

Aim

To investigate the relationship between

the size of bread with the number of black

spot on the bread.

1) The rate of evaporation is controlled by the


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) p y

surface area of the water exposedto the heat of

the sun

Manipulated variable :

Responding variable :

The surface area of the

water exposed to the

heat of the sunThe rate of evaporationAim/PurposeTo investigate the relationshop between

the surface area of the water exposed

with the rate of evaporation


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To investigate the relationship between ________________

with ____________

Number of seedling

The height of seedling


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To investigate the relationship between ________________

with ____________ exe

State the aim of this investigation


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What is to change

What is to observed

Quantity of newspaper recycled

Percentage of energy saved

To investigate the relationship between the quantity of

Recycled paper with the percentage of energy saved

State the aim of this investigation


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What is to change

What is to observed

Quantity of salt used

Time taken for eggs to

become expired

To investigate the relationship between the quantity of salt used

with the time taken for eggs to become expired


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To investigate the relationship between the type of surface

With the distance travelled by toy car


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MV/ h t d/ tt


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2) When MV/change trend/pattern

RV/Observed/Measured trend/pattern

e

1) If MV/change trend/pattern

RV/Observed/Measured trend/pattern


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LANGKAH 1


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LANGKAH 1

KENALPASTI VARIABLES :

a) Manipulated variables

b) Responding variables

c) trend/pattern setiap variables diatas

HYPOTHESIS


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a) Hypothesis based on the investigations

The group of pupils do their investigations .The result

from investigations are recorded in the table above.

(a) Write the hypothesis based on the

investigations above.

5 10 15 20 25 30 35 40

10 20 30 40 50 60 70 80

Time of the seeds

immersed ( minute )

Weight of seeds ( grams

)

If time of the seeds immersed is increase, so

the weight of seeds become increase

The more the time of the seeds immersed the

more the weight of seeds

Size of Bread(cm) The number of black spot onthe bread


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the bread

25 5

36 17

49 29

1. Identified :

a) MV/Change :

b) RV/Observed : The number of black spot on

the bread

The size of Bread

b) Trend : Increase

Increase

Hyphotesis1) If the size of bread increase, the number ofblack spot on the bread increase too

2) The more the size of bread, the more the

number of black spot on the bread.


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b) Hypothesis based on the statement


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b) Hypothesis based on the statement.

The user of the insect poisonous without follow

the instructions can cause the damage for theplant for along period times

(a)State the hypothesis based on the statementabove

If the user of the insect poisonous without

follow the instructions, socan cause the

damage for the plant for along period times

1.The food needed by an animal per day is


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The food needed by an animal per day is

affected by its surrounding temperature and

its activity level

Identified:

MV : i) Surrounding temperature

ii) Activity level

RV : i) The food needed by an animalper day

Hipotesis :

If the surrounding temperature increasethe food needed by an animal per day

decrease.

If the surrounding temperature decrease

the food needed by an animal per dayincrease.If the activity level increasethe food needed by an animal per day

Increase.

c) Hypothesis based on inference.


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(a)Give an inference for each observation are

made by Agriculture Officer in their report.

Observation : Plantation A produce their product

more faster than Plantation B

Inference : The fertilizer using by Plantations Amore quality compare plantation B .

(b) State hypothesis can be made based on the

inference that you make. (a).

If the fertilizer that use is more quality,so the

plant can produce the product become faster

Hypothesis/relationships/conclusion can be made by


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Hypothesis/relationships/conclusion can be made byusing the words more/more, more/less , less/less,

less/more or if/then.

Time Temperature

5 10

10 5

15 0

The more the time, the less the temperature.

If the time increases then the temperature decreases.


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Number of pupils in

the room

1 5 10 15

Condition in the room Too

cold

Cold Too

hot

hot

Hyphotesis

If the number of pupils in the room increased

the temperature in the room increased too


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Answer

d) If the number of folded of cloth increased

the duration to cloth become dry is increased

the volume of water left is decreased

e) If the cotton material were used


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Diucapkan terima kasihdi t k j d


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di atas kerjasama anda .

Semoga cemerlang 2009dalamP PSAINSandaIkhlas :-Cikgu Zanizah


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